How do you expect me to be happy for you?

you say let's be friends
But whowever stays friends
Hope i understand
But ill tell you where I stand

If that makes you happy im happy
Not wishing the best
Cause i was that for you
I guess it happens, it happens
Sometimes you win and then sometimes you loose

When you lay down at night
I hope you sleep alright
Cause you said this then did that
Took my heart gave it back
So how do you expect me to
Be happy for you?