Hi, wow this was a bit of a moving story. It already sounds like he wants to be back together. You are holding the power at this point. I would continue being a bit aloof and eventually agree to see him when he is back, and when that happens if he tries to move forward demand answers/only be willing to give him another chance if he demonstrates why and how he has learned or grown and that he is actually dedicated this time. But I don’t recommend an ultimatum. You could also have this conversation over text or facetime.. But either way it sounds like what you are doing is good in at least him realizing he made a mistake and that you have a good head on your shoulders