I gave him an ultimatum and didnt work on my favor…is there any chance at all?

This might be a little long but my bf and I broke up about 6 weeks ago. Just a little background, we were together for about 9 months. We were great together, we enjoyed the similar things in life, I mean I know in my heart that hes my soulmate. I fit right in with his family and same with mine. His family loves me. But we broke up on June 1st and it has been 6 weeks. During the break up, we still talked here and there. He was always the first one to initiate contact and I would always reply back. Around the 2nd week, we ended up watching x-men with his brothers ( still broken up) and then fathers day he texted me and tried calling me to let me know that his dad appreciated the food I made for him for his brothers day but I didn’t pick up or called back. Then a week ago, I got invited to his aunt’s bridal shower so I came. That night I ended up texting him asking if he was at his dad because I stopped by there and wanted to see if he could give me a ride to the club where the rest of his aunt and friends were going to be. He wasn’t home but he would ask if I was ok and we exchanged texts here and there just friendly texts. That same week, I ended up asking him to see me and he said he would be coming back from out of town and he said he can see me if it wasn’t too late; as usual I got my hopes up and he didn’t end up seeing me or even letting me know he wont make it. So I decided to write him a letter. In the letter I explained myself why I was so bitter and my emotions and how I loved him so much and the real girl he got with from the beginning is still here; you know happy and fun to be with and not always mad. I told him that I was thankful for his support and that he became apart of me. I told him in the letter that I cant be friends with him and that he or he might not see me in Vegas ( his family is planning on throwing a party for his birthday and his aunt birthday in August and im invited) and I returned the rest of his shirts and his baby picture. Anyways, that was the last straw for me; atleast I thought it was. I gave it to his brother in hopes that his brother will give it to him right away and he didn’t. The next day (Tuesday last week) I got a text from asking if im working and what time im off because he wanted to eat out. I said sure. WAited for him until 11pm because he got off late. I asked if he read my letter and he didn’t know about. I told him he can read it after we eat. So we went to his dads house to get the letter from his brother. I stayed in my car outside and he read it inside. He came out with tears in his eyes and he asked if I wanted a hug. And I did. He was crying, at that moment I felt good that he cried. I wasn’t crying until I started talking. He said he doesn’t want to lose me because in my letter I told him I cant be his friend and that he will lose me completely. He also said that he is not with anybody or talking to anybody. I told him I don’t see myself with anybody else but him and he said he doesn’t see himself with anybody. I asked him what is really wrong with him, he said he feels stuck, he said hes not happy and all his been doing is drinking. He said that he focuses so much on the problem and not so much on the solution. I told him that I wanted to be that person, your support. I also told him that I wanted nothing but for the best for him, I never asked him to change, I was trying to help him to become a better man. But the conversation sort of just ended. I ended up spending the night and we ended up sleeping together. The next day he texted how I was holding up because we only slept for 2 hours. I said I was tired and all. WE exchanged texts here and there the whole day. The next day I said hi goodmorning and all I got was hey good morning. So I knew something is up. I texted him and gave him an ultimatum. I told him to picture him by himself and if doesn’t see me with them then he can stay single. I told him to picture me with somebody else and if that doesn’t make him feel anything then stay single. I told him to picture himself with me and if he feels happy or nothing then stay single. I said in my text that if he doesn’t see me in the future at all that he can stay single and told him to not text me or say anything at all but if he decides he wants to be with me to give me a call. I told him if today is the last time I will talk to him that I loved him so much and stayed loyal and faithful to him and that I thanked him for everything. I told him its either im your gf or nothing at all. and that I will disappear and block him on everything. I gave him until midnight and that was last Thursday and I didn’t get nothing at all. I didn’t block him, I just deleted him on my social media. I memorize his number so its no use. But im just wondering if any guys out there, what do you guys think hes going through? I feel good now since its been about 6 weeks but since the ultimatum I haven’t talked to him for almost a week. Not sure if its ideal for me to still go to Vegas in August since im very close to his aunt. Please help!!! I really need somebody out there to give me their perspective of my breakup. :((

Thank you!!!