Why does he keep going and coming back to me.

I have known this guy for some years now. we were in a relationship. The issue is he quits the relationship anytime we argue or disagree with each other's opinion. Currently he is gone and begging for another chance. this is the third time
please why does he keep going and coming back to me, I really want to know

[wtfKwaku]

Sista,
1. He comes back because you let him.
2. I can't answer that, I'm not a sista.