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Sun sextile Sun
This aspect denotes friendship, communication, and cooperation in creative self-expression. You tend to encourage one another and are apt to share pleasurable activities. This is a very positive aspect for romantic relationships.

Sun sextile Moon
This is an aspect considered very good for cooperation and understanding. There is a compatibility influence assuming that the Sun and Moon are compatible sign, i.e. Fire and Air, or Earth and Water. This is a very good combination for family and domestic relationships.

Sun sextile Mercury
This comparative combination favors communication and intellectual friendships, and general cooperation. The ability to communicate enables you to resolve problem areas in the relationship.

Sun sextile Venus
You enjoy each other's company, and may share many common ideals and values. There is a good deal of emotional understanding reflected in this combination. Though this doesn't necessarily show marriage, it does help and favor marriage or romantic relationships.

Sun sextile Mars
This aspect denotes a rather energetic cooperation; you like to work together and get things done. It suggests a friendly competition or stimulation to action and achievement. It is an aspect helping romantic relations.

Sun sextile Jupiter
This aspect produces a cooperative attitude and generous friendship. You are likely to make excellent traveling companions. There is general philosophical agreement at many levels.

Sun sextile Saturn
A favorable Sun/Saturn aspect is desireable because it gives such a tone of stability to the relationship. This aspect produces serious friendships and cooperation in business and organizational matters. It denotes an attitude of restraint, discipline, and stability in the relationship. Though it does not of itself indicate marriage or romantic attraction, it does increase the durability of such relationships.

Sun sextile Uranus
This aspect generally denotes unusual friendships, or meeting under extraordinary circumstances. There is likely to be an inexplicable and immediate attraction. Though associated with romantic attractions, this aspect doesn't of itself indicate an enduring relationship.

Sun sextile Ascendant
This aspect suggests that you are able to direct your wills effectively in working together. It's effective in working toward mutual goals and enhancing one another's self-image. This is an indicator of romantic and sexual attraction, and it's also favorable for harmony in a marriage relationship.

Sun Conjunctions

Sun conjunct Sun
You share the same Sun sign. Certainly you understand each other, but you may both be trying to play the same starring role in the relationship, with competition rather than cooperation the result. Much depends on the nature of the sign involved. Signs that are cooperative by nature such as Libra and Aquarius do better than the more demanding Aries or Leo. Mutable signs, Pisces, Virgo, Gemini, may find the combination easy, but a sense of direction may be lacking in the match. There is also the danger that individuals with the same Sun sign will goad each other to an excessive display of the characteristics of this sign.

Sun conjunct Moon
The Moon person feels emotionally in tune with the Sun person when the Sun and Moon are conjunct. There is a strong indication of a powerful romantic relationship and potential for marriage. The conjunction establishes a bond of shared and identical qualities. The moon person tends to find the Sun person's behavior and basic approach to life agreeable and pleasing. This aspect also signifies a strong sexual attraction. This conjunction creates a mutual understanding and appreciation of one another. In traditional male-female relationships, this aspect tends to work best when the Sun person is male and the Moon person is female. The Sun person tends to be the leader and take a dominant role in the relationship.

Sun conjunct Mercury
The Sun person tends to influence the Mercury person's way of thinking when the Sun is conjunct Mercury. This aspect provides mental stimulation and compatibility; the Mercury person feels at ease with the Sun person's style of expression and general perspective on life. Depending on other aspects in the chart, this aspect can facilitate communication and positive expression within the relationship.

Sun conjunct Venus
The Sun conjunct Venus is a classic indication of a love relationship. Socializing and creative pursuits are favored with this aspect. You enjoy each other's company and have similar interests; the emotional/intuitive link is especially strong with this aspect. The Sun/Venus conjunction creates a tendency to idealize each other and there may be a sense of "worship" between the two of you. This aspect is responsible for romantic attraction and emotional affinity which often leads to marriage.

Sun conjunct Mars
When expressed positively, this aspect can produce a lot of positive energy where the people involved have the potential to accomplish many things together. Expressed negatively, this aspect can create a great deal of tension and conflict. Either way, this aspect produces a great deal of  energy and passion. There also tends to be a spirit of  competition between the two of you where each person is particularly aggressive. This aspect also indicates a powerful sexual attraction, however, it is not indicative of an emotional or romantic bond. Look elsewhere in the chart for romantic or affectionate tendencies.

Sun conjunct Jupiter
There is a sense of mutual generosity with this aspect. You tend to build up each other's confidence and optimism. You share many spiritual, philosophic, and/or cultural values. This relationship will always tend to be honest and aboveboard. In a marital relationships, this comparative combination indicates cooperation in handling domestic responsibilities, especially the raising of children.

Sun conjunct Saturn
The influence of Sun conjunct Saturn is restrictive and serious. This is a very difficult aspect between charts and does not favor romantic involvement. The Saturn person tends to have a negative, depressing influence on the Sun person. There is a strong sense of responsibility with this aspect, however, which creates a deep, long-lasting commitment when more favorable aspect are present elsewhere in the chart.

Sun conjunct Uranus
When this aspect is present, the relationship usually begins quite suddenly and is often marked by unpredictable events. Sun conjunct Uranus produces a great deal of excitement and powerful sexual attraction. This aspect is generally unstable, however, and the relationship often ends just as quickly as it began.

Sun conjunct Ascendant
This is an important aspect in synastry. There is a strong bond and deep understanding between the two of you. You tend to have a lot in common and share a natural affinity. You feel drawn to each other and find each other's style and demeanor appealing. You tend to build each other's self confidence and feel comfortable expressing yourself when together. There is a significant amount of sexual attraction and compatibility with this aspect.

Astrological Compatibility: You Are More Than Just Your Sun Sign

Many astrology novices focus strictly on sun signs when attempting to glean information about astrological compatibility failing to understand the depth of astrology. There are many factors to consider when examining the potential of a relationship from an astrological standpoint.

You are more than just your sun sign; your astrological chart consists of a moon sign, rising sign and eight planets. Each planet rules a particular area of your life; for example, Venus rules the love life so if you want to examine your love nature or the love nature of someone else, you would read about the Venus sign. A Pisces sun sign with Venus in Aries will act much differently from a Pisces sun sign with Venus in Pisces. The Venus in Aries person will have a much more assertive and confident approach to love relationships than a person with Venus in Pisces. The Venus in Pisces person's approach to love is typically more passive, sensitive and emotional.

Synastry (the comparison of two or more natal charts) is a valuable resource for people who want to examine their relationship with another person based on aspects between each person's natal charts.

The Planets, Ascendant and Moon

Sun
individuality, general personality, your outer personality is a blend between your sun sign and ascendant.

Ascendant (Rising Sign)
outward demeanor, image, physical appearance; your ascendant sign is responsible for first impressions.

Moon
emotional response, instinctive reactions; the moon sign is important in romantic relationships because it determines your emotional connection with another person.

Mercury
learning and communication, expression of thoughts and ideas; it is important to study the influence of Mercury in both charts to determine communication strengths/weaknesses in a relationship.

Venus
love nature, attraction and ability to attract, sex appeal; your Venus sign shows how you express yourself in romantic relationships/marriage. In a man's chart, the placement of Venus shows what type of woman he is attracted to. For example, if a man's Venus is in Scorpio, he will be attracted to a woman who has Scorpio traits.

Mars
energy and sex drive; the placement of Mars suggests where your energies will be directed. In a woman's chart, the placement of Mars suggests what type of man she will be attracted to. A woman who has Mars in Libra will be attracted to a man with Libra characteristics.

Jupiter
success, generosity, luck

Saturn
responsibility, self-discipline, obstacles/limitations. Saturn's influence can be restrictive, cold and severe and is usually noticeable in your life when you are faced with obstables.

Uranus
 change and originality

Neptune
mystery and illusion

Pluto
transformation, destruction