@Vincentteo321,
So what do you do... Sit behind a computer, watch TV, text, get fat, become a loser, loose all of you buddies, never establish how a female thinks, because you never get to talk to other girls, only your "girlfriend"....
Are you living? I don't think so.
Who cares if she is "cheating" what she is cheating, is you out of a life...
Get the heck out of there.