Most Helpful Guy
It's very simple. Guys need overt cues that a girl likes him. Trashy girls send out those signals from the start and a guy is more secure with that. Classy girls take more effort to know. Then, as with most guys, you get friendshipzoned for your efforts, so why bother? My approach to women is simply chatting to them as a friend (like I have no expectations it will lead to anything) it saves me the drama. Yet a tarty girl at a bar... I know she wants it so if I do my thing and she is into me, it's a lot more better.