I feel like I'm not loved and that nobody cares about me.

I don't know why I started feeling this way. My family is very supporting and I have a group of friends that claim that they love me but yet I feel like nobody gives a crap about me. It's gone to the point where I start crying and I've gotten really "depresive" about it. Maybe there is something wrong with me but every I love you people say it just sounds fake. It sounds as something they do just to keep me around for interest. It truly does hurt when I think about it and I don't know how to stop it