Why Are You Back??

Never, have I ever in my life thought that I would be posting a post about this. I thought that that part of my life was over, but I guess not. On Friday, one of my ex boyfriends called and just randomly started wanting to hang out with me again. We have been together everyday since then, and I'm not sure if this is what I want. I am already dating someone, so it's not like I can just switch guys. Plus, I don't like him in this way. I know for sure that this is not from God, because He is not the one that God has for me. That is not that hard to see. Its just totally confusing as to why he has come back. We have so much in the past that hurts so much. We shouldn't be hanging out. And to be honest, I am not sure what I want. Part of me still cares for him, but the other part reminds me of all the bad times and how much pain that we went through, and at times are still going through. I am totally confused on what to do, and I am not sure if I am brave enough to stand up to him and tell him that we cannot hang out anymore. I am afraid of him getting upset over it. Advice on this would be greatly appreciated!