How am I supposed to be happy?

How am I supposed to be happy?
When you don’t know your hearts desire.
How can you say you love me?
When you hate yourself.
How can you be happy with me?
When you say you don’t deserve my love.
How can your feelings change so fast?
When we promised to stay together forever.
The way you make me feel is so confusing,
But I know I love you and always will.
You make me so much happier,
Than I ever thought I could be.
Don’t give up on me just yet,
Not after everything we already were though.
It's you and me forever baby,
And for that I love you.