I don't understand...

I’m the kind of friend who gives without expecting anything in return
I’m the friend who stays up all night comforting a friend
I’m a friend that listens to a friend’s problems when I’m falling apart inside
I am a friend that cries when you cry and laughs when you laugh
I’m the friend is always there even when everyone else isn’t
I’m the kind of friend that finds joy in my friend’s successes
I am the friend that always has your back even when you are wrong
I’m the sort of friend that never talks bad behind a friend’s back
I put so much of myself into my friendships…
So why am I the friend that is forgotten and left behind when it’s time to have fun?