Hey Buddies!!

Here is the deal... I have a bestfren. A girl best fren.We have a very good frenship with each other.She has a boyfren and they both make a good couple.Her boyfren is a very nice guy. Everything was working good.I had a feeling that her bf never liked me as which is usual  I dont know why?.A boyfren will never like his gf to be the bestfren of some other guy.  I cant see my bestfren cry every other day.So i thought inorder to make their life happy so that her bf wont have any problem with me.I am trying to leave ma best fren and told her not to talk to me anymore because that way she can get close with her bf.I will get hurt coz i will be alone without my bestfren.But i aint got no option other than this....I want her to be happy thats it...I am a guy i will manage to be happy anyhow....WE JUST FRENS>>JUST FRENS>>BEST FRENS
WHAT SHOULD I DO??????