Had this happen a while back to me, but for me it was a big eye-opener to a personality disorder I have (schizoid) and haven't made any friends since.

For a normal person this may be far more of an issue, and it may be a good idea to make friends with people who might seek to hang out with you outside the game, that way you know that the game isn't the only reason you socialize.

I hope you do not remain torn up over this, you will rebound but you should also take this as a lesson and perhaps don't get as attached to people until you are sure that you are actually friends.
Ugh, I'm such a robot.