Well, it's not worth your friendship now. You gave up a lot for him, but you are not that important in his heart at all. Why do you feel sorry for someone who is not in his heart and live for so long? I don't know how you abandoned your former friends, but I only know that real good friends don't break up. They should be very happy when you come back. If you really can't go back and your current friends don't care about you, then make new friends. Life is so long, you don't have to be around some people. If you are a student now, I suggest you study more. As long as you become better, I believe more people will make friends with you.