Greatest Sign of Passion
"The most important sign of attraction is mutual eye contact," says Palmer, who is also a spokesperson for the American Psychological Association. "This is a brief glance, initially. It is not a stare, because staring is hostile." If a woman glances at a guy and he notices, he'll probably glance back. In turn, the woman will probably look again, and if he's interested, he'll look again. This repeated volleying of eye contact is an indication of mutual interest and can lead to more body signals.