Answer:
You may not have the teamwork it takes to play with other people
also, if your alone to much, you may just feel that way forever. You need friends
Explanation:
I would say that if she is being mean you can first try to talk it out with her (because relationships may take work sometimes and if she is really important both of you will be willing to put in the work), but if that doesn't go well and you really don't think it is going to work you should go to your other friends or family for support especially if she was a very important part of your life.
Yes. I have had one :). Called a canker sore