I feel like it's difficult to give real picture of real life complicated situation by just writing it in relative short description. I appreciate your help and advices very much, and I have read them all very carefully, so I will try to explain a little bit more.

divine1966, of course he knows why am I upset. And he does have parents who, judging by his side only seem extremely controling. I admit I didn't see the other sidem but even then, seeing how he behaves, especially when they call, I sense that there could be overprotectiveness and control from their side. I tried, very carefully to tell him that several times, but I don't think it is possible to repair that problem now after so many years. he just doesn't see it the way I see it. There is NO need for parents to protect and control fully adult, healthy man. I guess when you grow up in those terms, you can't imagine otherwise. He is acting like he doesn't have a choice. I honestly don't want to meet them, I am scared of people as it is.
On the other side, he doesn't hide me from his friends. He happily introduced me to everyone we met, well except his parents. And he kinda looked proud to introduce me as his girlfriend. So, there is that.

Bill3, I know it's emotional blackmail. That is what so many people do, but so many of them have no idea what damage it does to other person. They don't even have idea that what they are doing is some for of manipulation and they get defensive when you tell them that. I have seen so many people do that.

Anja4 thank you for your honest opinion, I appreciate that. To add some more information, I did state my issues here. I am introvert and quite shy and insecure, I have social issues and problems making friends, and it could have something to do with the fact I was bullied and even sexually harassed in grade school. That leaves scars. Those are my issues. How I know people don't like me? No, they never tell me, they just never ask me to go out anywhere, they never call and when I call them they have million excuses, every time. So, there is that. But except my bully coworker, no one told me that I am bad person in my face. They just don't seem to want to hang out with me. Though I heard from some that I look "extremely reserved and aloof". I have a hard time meeting people, talking to them, or having anyone close to me. I never did before him. So, if you understand how is to be very socially awkward and shy you would know how difficult is to make any friend. And how you really want to keep the one you have. Because you invested everything you have into that person. I know he cares for me and a lot, but in those problematic conditions, and with that background, I am afraid it will never be better. I would like to keep him as a friend, maybe not boyfriend, but is that even possible at this point?
I would skip any debate on current pandemic as that is not a topic here. That might be an excuse now, but as socially awkward and shy as I am, and with what I heard about his parents, I honestly have no wish to meet them. I have no intention to get married, neither I wanted to. I just wanted relaxed, normal relationship where we don't need to see each other every day, but we can see each other without looking at time, having actual curfew, and planing to meet days ahead in specific time, where I have to panic and clear my schedule for that date. I just want relaxed hanging together.