Odd situation with neighbor

My neighbor (45 M) and I (33 F) met about a year ago. I live above him. We both moved to the apartments where we live now after bad breakups. However, he was continuing to hang out with his ex. I felt like he always had some level of interest in me, but I tried to ignore it because I was still hurting over my breakup. His ex would tell him that she was so stressed with work, her studies and depression that she couldn’t fit him into her life. Yet she would still prioritize her friends. She broke up with him twice before he moved here. But she said she will probably want him back when her life stress gets better. ? (I think she is bread crumbing him.)

He has flirted with me a few times since I moved in. I played dumb because of our age difference and I wasn’t sure what his intentions were. I do find him to be pretty attractive. And he does have a good career. He is a more sensitive kind of guy who keeps to himself a lot.

Anyway, over the last few months he has sought me out to tell me about his problems with his ex. And I would listen to him and offer advice. We would also exchange music recommendations and books for one another to borrow. Once again, I felt a level of interest from him, but I ignored it.

Last weekend he ended up asking me (via text) what I do when I am frustrated sexually. He asked me this out of nowhere. And he told me that he always thought I was cute. And basically that he had a sex dream about me. I kind of went with it, but I was also shocked that he felt this way for me. He then invited me down for some beer the next day. He texted me to tell me that he had “manscaped.” I assumed he would try to have sex with me at his place, but he never tried anything. We talked until midnight and had a fun time though. We definitely have a lot of chemistry.

He found out two days later that his ex is planning to move out of the country as soon as she can. She had been planning this, so he knew it was possibly coming, but she made it official this past week without telling him first. When he asked her why she decided to do this before telling him, she said “I’m sorry hun. But we talked about this already. I’m not trying to purposely hurt you.” He found out she was moving when she listed her house for sale on social media. He came to my door crying when he found out. I talked him down from his panic for over an hour. Mind you, this was in the middle of my work day. He told me that my pep talks were making him more anxious. I got behind in my work that day because of his panic attack and he was grateful for the help, but he also seem disappointed in what I had to say. I feel strongly that he is not living in reality and that he thought things would work out with her eventually. In my opinion, she is kind of using him for emotional support (which he has also mentioned many times) for her problems, but isn’t actually factoring him into her future. I checked in on him later that day and we talked for six hours about all kinds of things and it was enjoyable. He also told me that he has to cut his ex off because she has hurt him too many times. And that he is afraid to be hurt again. And that he needs to process it all.

The next day he told me he was feeling so depressed that he had a graphic dream that he died. I was so worried about him that I texted him later that day to check in. He never answered me. So I knocked on his door the next day and he answered. He told me that he is so exhausted emotionally that he isn’t answering his phone for everybody. But he did seem to be doing a little better. I texted him again two nights ago (one day later) about how my second Covid vaccine made me feel exhausted. He never answered. He always answers me. I know he is fine now because I heard him in the hallway talking with a pizza delivery guy and laughing with him. This angers me because I do not understand why he doesn’t have the energy to answer my quick text to check in but yet can laugh with the pizza guy. I feel kind of used. At the same time, I understand people need their space. But I feel like at this point in the situation it is common courtesy.

I am feeling so many emotions about this. #1 – I feel frustrated like he doesn’t care much that I spent a lot of time last week helping him because he seemed a little frustrated with me when I was trying to help. Maybe I am being dramatic about this. I don’t need applause for helping him, but some of my advice was met with hostility by him. I feel like we don’t know one another well enough to act that way. And #2 – I understand he needs time to be alone, but if he can order pizza and laugh with the delivery guy, can’t he answer my text? I told him I would text him here and there to get his mind off of things.

I was hoping we could possibly pursue some kind of “situation-ship” but now I’m feeling really frustrated and maybe a little used. I’ve only ever been in long term relationships, and I was hoping to have a short, fun ordeal with him. But he is all over the place with me and I am already annoyed and very let down.