He ended things with me 3 weeks ago because he wanted us both to take space and work on ourselves, which put me over the edge. I had a mental breakdown when he tried to end things and then accepted to take space 2 days later. He said "I just need space for a bit." "Maybe in the future we can go back to our normal but can't put a date on it so let's see." He just really wanted me to work on myself. We haven't talked since then. A week later he unshared location and broke our snapchat streak. Over the next week, he deleted the playlist he had made for me, removed himself from our shared notes where we had our bucketlist, unfollowed the playlist I made for him, deleted me off Snapchat, and deleted me off Twitter. He did it different days, not all at once so it was a slowly, painful death. We are still friends on FB and instagram.

Today out of no where, he texted me "Hey, how are you?"

I don't know why he texted me, maybe it's for closure or he just wants to talk? I am not sure what to do. I am in medical school and have a huge exam Monday so I really can't handle hearing him say he changed his mind and wants to be done right now. I have been a mess the last 7 days and it's significantly affected my schoolwork. He is leaving to work out of town for 6 weeks the Friday after my exam so I did want to talk to him before then to get closure. I am assuming he texted me to cut off ties since he had unfriended me on most social media. However, I am not sure. I was going to text him "Hey, I’m doing alright, hope you’re doing well. I can’t talk now I really have to study, I’ll text you Monday" or just text him Monday and say I didn't mean to ignore him but was studying for my exam. I know for a fact I have to defer my feelings till Monday in order to pass this exam. I am not sure what is the better option is however. If I wait till Monday, he will be thinking about me, but it might be better to let him know to talk Monday. If he doesn't respect that then he obviously doesn't respect me. I am hopeful he would respect it though. I am also a little upset since he went on an unfriending spree with no explanation especially since our last conversation he said he had just wanted space and then he texts me "Hey, how are you?" Idk. I miss him and would want him back after taking space as I really do have to work on myself, but is he just hitting me up to end things definitively and move on?