Do you really have to feel jealousy before you realise that perhaps you might want to be with me again? And then, is it real if you want me back only after you realise you don't want anyone else to have me? Would that ever develop into something real again, or would it always be a lie..? My secret is, I don't want it to be like that. I want you to want to be with me because you want to.
If someone is being with you simply because they don't want anyone else to have you, that isn't fair to you at all. It's good that you realize that, but now you have to choose whether you want to be in a situation that you feel is that way.