Someone Explain To Me Why

My story is very long, but I will tell you a little enough to make it clear to you more or less if you can give me an answer. I have loved a man for more than three years, we have never had a relationship, although he also has feelings for me, just the circumstances were like that. We see each other very rarely, we hear each other more often. Neither he is married nor I have other reasons. The last time we saw each other, something very strange happened. Everything was very nice, we went to visit, then we went home, talked for a long time and went to have sex. I started making French love to him, he was very nice, he was shivering with pleasure, but he asked me to stop, got up for a while, then he lay down next to me and hugged me and we started having sex, he told me that he preferred to do it for him. whistle because it was better for him, which surprised me, because every time we saw each other so far we had only sex and he liked it very much, I did not refuse him I wanted him to be nice, and I like to give blowjobs, but when I continued it took about two minutes and he said that it won't work, the reason wasn't in his cock - it was hard to burst, and I hadn't lasted long. I don't know what happened, I asked him and he said he didn't need to give me an explanation. The next day he texted me that he was very pleased and that he was very sorry for what had happened, but he still did not give me any explanation. Tell me why this could happen, I forgot to tell you that he hadn't had sex in a very long time, but I don't think that matters. The last time we saw each other I was about 5 kg thinner and I wonder if that didn't disgust him - gaining weight, but I still don't think because I'm not a pig, I used to be pretty weak. Once again I want to emphasize that it was very nice to see and deliberately stopped it is obvious but I do not know why. Please, tell me. Please tell me, do you think he will be with me again ??