May I offer a different perspective? Maybe thin and no curves, no chest isn't really what is attractive to men. I know for a fact men are naturally drawn to curves (what I call real women). You should truly be proud of yourself and who you are.
I'm a man. I've also felt in my life I wasn't attractive. Or wasn't as attractive as certain friends. Or women give more attention to other guys than that did me. I've also come to realize, I think too much!! I'm inside my head constantly worrying about this and that, and not actually living in the moment. And when you over think, it's easy to get negative on yourself and others. I truly believe this almost eminates some sort of negative energy to others. People can sense this person isn't happy, or isn't approachable. And won't approach you, because something in your body language or your energy is telling them this person doesn't want to talk, or doesn't like me.
Just speaking from experience and offering a different viewpoint!
