Am i delusional to keep hope?

So I was this guy named Jon for about 2 years, however we were never officially together, but we lived a lot of life together. We traveled Europe together (this is also where we lived) and we have a very strong bond. Me and Jon had a six month break due to work assignments being relocated, and since we were never official we decided we would take a pause and see other people. During this time he reconnected with a highschool friend named Jane. Jane and him had a long distance relationship for this time, when Jon moved back to where I was at, we decided to be in a relationship and he broke it off with Jane. After a few months Jon got word that he had to move back to the states for work. I tried to get a job near him but it didn’t work out due to his job being in a very rural area. Jon and I kissed goodbye . Shortly after Jon moved away he got back in a relationship with Jane. Me and Jon had maintained a frienship for about 6 months and he ended up cutting me off after a while which understandable. However I would continue to watch him on social media. I would check on his accounts about every month or two so and one day I was blocked. I went on about my day and was super sad about it but kept it moving. About a year and half later after Jon moved, I had gotten an internship near where he was living at and I checked his socials and I was unblocked and he had removed Jane from his socials so I decided to reach out. I asked him if he would like to get breakfast he agreed and we had breakfast. It was great. However towards the end of the hang out he said he couldn’t see me anymore and that he was still seeing Jane but they were in a complicated state. He seemed pretty exhausted and he said that he’s tried breaking up with her multiple times but “she won’t let him” he also said that she told him that “had to cut all his friends out” that she didn’t approve of. Also Jon use to explore a lot and Jon said since dating Jane she’s asked him to stay in. Jon seemed exhausted, tired and Burnt out. It was like the light dimmed a bit in his eyes. After Jon told me he couldn’t see me anymore, I just said okay, and that I would respect his wishes. He wished me a good life and said this is the most fun he’s had in months. He said I would have to be a stranger though in his life from then on out because he said Jane was going to be his forever. I haven’t spoken to him since. Jon blocked me right after our hang out. It’s been about 5 months and I’ve checked his Instagram periodically and I’ve still been blocked. However last night I had a dream that they were officially back together. So I woke up checked his Instagram and I was unblocked and she was all over his page. ( I had checked his Instagram about two days before on my friends phone and was nowhere to be seen on his page). I can only hard assume Jon has continuously used me as a pawn in their relationship as Jane kinda was always second to me. However Jon also knows that i stalk his page and he knows I look every once in a while I guess my question is do you think that Jon purposefully unblocked me so i could see, and do you think there will ever be a chance for us back together?

Ps: yes I’ve dated other people during this time but I always just go back to thinking about him. If you have any advice for me that would be great!