posted February 26, 2013 07:56 PM
Houses in synastry are alllllways tricky.There are no absolute rules.
So.. basically, a guy's Mars in a girl's 1st house.. doesn't guarantee attraction at all. If the Mars is unaspected or weakly so, chances are, there won't be much attraction and it could even turn into annoyance/irritation between the two (and yes I have a precise example in mind).
Venus on the other hand is much easier and favourable, I think.
If a woman's Venus falls in a guy's 1st house.. she'll probably find him attractive but not necessarily sexually appealing. I think the guy can also find the woman attractive cause women are usually more in touch with their Venus side and express it more easily. So he can "recognize" a similarity, for example. That could be appealing and can lead to harmonious, easy-going relations (at least outwardly). Again, doesn't have to mean they'll be crazy about each other but it's a plus. Look for strong aspects from those planets to the house person's planets, it will give a clearer idea.