Not to be rude, but I am hoping this is just an age thing and something that will pass as you get older. I have been hurt by a lot of girls in the past, and yes sometimes because of that I have a hard time trusting them. I still give them a chance though. My point is that this is a two-way street. Especially in the society we live in today, females can be just as cruel as males. Not all men are bad and out just for themselves. Just like not all females are bad and out for themselves. And to be honest, you throwing us all in the same category is a tad hurtful. Yes, I consider myself a "nice guy".

This is definitely something I would speak to my T about, but I also think it's something you have to work out on your own. Just because someone is being nice to you doesn't mean they are looking for something in return. It also doesn't necessarily mean they are trying to have a relationship with you either. Sometimes it could just be friendly conversation, which in my opinion is definitely lacking these days. Nice guys can hurt you, and they can definitely turn out not to be nice. But I would take a chance with someone being nice way before I would with someone being rude from the get-go lol.