I feel upset that the lady friends I have chose other guys over me?

the 2 female friends I have now have boyfriends, I'm 22 and never had a girlfriend before or any guy or female friends to hang with, I mainly have hard time socializing do to my piece of **** autism, and now last year i finally gain 2 female friends and try being cool and going out with them, then suddenly one has a bf but first didn't want me to know because she feels I would get upset about it, now my other female friend i really care about now says on her facebook that she's in a relationship with some ****** looking douchebag, I try to be the greatest friend i could be but yet I end up with nothing, why can't girls like me?