Your Venus shows what you like, what you are attracted to aesthetically. Venus rules the 7th house. If you have planets in the 7th house you will tend to like those things about yourself that those planets signify. Accordingly, when others have planets that fall in your 7th house you will tend to like those aspects about them that those planets represent.
My sun and Mercury fall in my 7th house. I like my ego and the way I communicate. My partner’s Mercury is in my 7th house. I like it when he communicates with me. His Neptune-ruled Mercury sextiles my moon, so it feels good and is an opportunity for closeness when he he tells me stories or we talk about things of a higher manifestation.
The 7th house not only shows what you like but on the flip side can represent open enemies. It’s not unusual to find you have dischord with someone whose planets fall there, particularly if they display that planet’s energy in a way that is not in concert with how you like to see that energy used. My partner’s Mercury is quincunx his moon. Sometimes he’ll talk about his feelings and sometimes he flat-out refuses. I hate that! When he refuses to talk about his feelings he feels like an enemy! Knowing these things helps me to modulate my response, that is to say it keeps me from kicking him in the shins when things don’t go my way, for the most part.
Do you have 7th house planets? How do you react to people whose planets fall in your 7th house?