You can...

You can be my friend
you can be my worst enemy
you can love me
you can hate me
you can make me laugh & smile
you can make me cry and sad
you can like me as a friend
you can break off our friendship
you can ruin my life
you can say sorry
you can be forgiven
you can be a total jackass to me
or you can do everything you want, but you cant break my heart AGAIN!