When one is born when the Sun is close Venus then we say that this person has a combust Venus. The powerful energy of the Sun burns and agitates any planet it is in close proximity with. Often these people will have more turbulent love lives with the need to make sacrifices in this area of life. In most cases the sacrifice of love is because of career or other personal goals or ideals represented by the Sun. Even though this position can be painful when it comes to relationships and is observed to cause stronger likelihood of divorces/separations, the ultimate purpose of the Sun is to spiritualize and purify the influence of any planet it is with: in this case the sensual side of the person(Venus) in refined. So these people will be full of desires to love and experience sensual pleasures, but they will keep getting burned by these at moments and eventually learn to give them up for something bigger and more satisfying symbolized by the Sun (look at what house the Sun rules) and later in life they can be very evolved in regards to how they handle their desire nature and relationships after all the purifying lessons of the Sun.
Once Venus has been purified, Venus/Sun people are some of the most refined, artistic and gentle people when expressing love and aesthetic principles.
In some case, Venus overpowers the Sun, when they both fall in Pisces, Taurus, Libra, Aquarius or Capricorn, signs in which Venus is stronger than the Sun. The person will still be somewhat agitated in love affairs but they will not have to sacrifice these fully.
Sun becomes weaker in those signs and often a person will sacrifice their goals or some career plan because of relationships or some other compromise they have to do because of relationships. When the Sun is strong, Venus is sacrificed.
Any planet which is close to the Sun becomes invisible due to the brightness of our star. So these people can easily have affairs without being found for years. It is not a combination for cheating, but if they do, they can be very good at it and hard to detect. In Most cases these people experience at least one important relationship in life where some secrecy or invisibility is required, like love triangles, being someone’s lover, or having a very private relationship.
The Sun also represents some important figure in the person’s life(usually father) who might have been unappreciative or dismissing when the child with Sun/Venus was showing love and affection asking for attention, so as an adult this person will have issue with self worth(Venus). When their love/attention is not fully appreciated by the other person, they will feel very vulnerable and even rejected. So one has to be careful with their feelings as their sense of self worth is easily shaken and wounded! This is another reason relationships are more difficult and agitating for them. But then again almost 30% of humans have this combination, so it is a very common theme for us all! The closer the Sun is to Venus, the more prominent this strong vulnerability in expressing affection due to self-worth issues. Those issues will improve as will relationships, when Venus move away from the reach of the Sun through progressions, sometimes this happens early in life, other times much later.
There is one exception though, if you happen to have your Venus retrograde(with the letter R next to it) then Venus does not suffer the combustion from the Sun, because it becomes very powerful due to its closeness to the Earth then. Such a person becomes very Venusian: highly sensual, their relationships do not suffer that much, even though they might be just as fiery, and they do not have to make the sacrifices the Sun demands when with Venus. Such people will have powerful earthy artistic gifts, not as gentle and refined as those of the other Sun/Venus conjunction people. And they can manifest these in a more tangible way, while the direct Venus people might have to make much sacrifices for their art or never get around to putting it in practice even though they just as artistic and creative.
Sun being one’s career, can often give people called for Venus careers when with it. These are all vocations in female industries and products, working with women, fashion, beauty, art, design, counseling, giving advice, negotiations, diplomacy, amusement, seduction, relationship advice, luxury products, etc
And last butt not least, the Sun combusting Venus can sensitise the organs ruled by Venus and the person should be careful with these. Venus rules the digestive system, which is often a source of problem especially if Venus is in a weak sign like Leo, Cancer, Virgo, Aries or Scorpio. Venus is also the kidneys --these can suffer due to dehydration of the body, therefore it is advisable that Sun/Venus conjunction people drink more clean water to help their kidneys. Sugar levels in the blood and insulin production is also Venus ruled, hence Diabetes in more likely as well. The female hormone--estrogen and the thyroid can also be a vulnerable area for the person. As well as the reproductive organs. Throat and vocal chords is also ruled by Venus, and having in mind how many people get issues with these, it is not a surprise that almost 30% of humans have a combust Venus.