I think before you try to "win her back", you should examine yourself. Think about if you were her, why you would "have none of it". Maybe she doesn't like being the "whenever it's convenient for YOU" girlfriend. I know I don't. The fact that you put "girls [,] they come [,] they go" basically tells everyone you haven't changed one bit and that she's nothing more to you than a girl. Think about it. Would YOU take you back?