i think im still in love with my ex

we started talking/dating when we were 13 and we’re now 18. We completely stopped dating when we were 16 and it really messed me up mentally because that was my first and only relationship i’ve ever been in. even though he hurt me sooo many times, we are still friends. He lies and tells his girlfriend(s) that im a “family friend” (we go to the same school). And its crazy because if he were to say he wants to be with me again, i wouldn’t mind. its like a part of me is still attached to him.