Cropping people out

I've always been the type to push people away. But when they leave, I get all depressed. This one hasn't left. This one is real. The type that stays through all the ups and downs. No matter what. When this one leaves, I'd be more than depressed. But if this one leaves, I'd let it go. Cause this one I can't have to myself. And all I can do is wish for another one to come around.