What Happened To Me?

What happened to her?
The girl I was.
The one you could share your eternity to.

You trusted me I trusted you.
Who am I turning into?
It's all about me.

I'm becoming what I swore I would never be.
The one thing I said I hated.
The self absorbed friend.

'Please I need help' is all that you said
'Well I have it worse so help me first'
Who have I become?

I'm not the girl I used to be.
I can see why you should hate me.
What ever actually did happen to me?