After we broke up he came back 3 times

Do you mean he came back and you got back together or came back and you had sex or he came back to talk?

Well you never can tell... you'd need more information then just that to give a well answer that in going to do any good. But if he keeps going back to you then you never know he might.

What a rollercoaster ride you two have. Why the many break ups?

Please cherish the relationship now. Like above, Talaniman said that you shouldn't have many break ups. It is immature.