How would a guy with Pisces Mars + cap Venus/Mercury act towards/pursue the girl they liked? He is an aqua sun/moon as well!
From my point of view he’s going to be subtle but in his mind his subtleties speak volumes. Aquarius sun and moon to me tells me he’s unique, friendly, and a little reserved with raw emotion -- so this might be confusing since he probably won’t be completely straightforward. However, if his Mercury and Venus are in Capricorn, he’s probably ambitious and goes for what he wants. So if he likes you/wants you then you can be sure that he’s making passes, but they might not be the typical kind. It may be hard to perceive them as passes. He’ll probably make a lot of jokes and you may be the subject of playful teasing. It’s a way to get his feelings right out in the open while disguising them as fake so it’s not too too obvious.