Most Helpful Guy
Don't look into it. If he wants to get back together he'll tell you. A friend request is not tryin to get back together - don't overthink it like you already are
Most Helpful Girl
He isn't ready to cut all ties and if fighting is the only way he can connect with you, so be it. It's not healthy. Don't add him on FB. Go completely dark. Don't allow him into your world at all. It's not healthy.