We are in some sort of sexual relationship for two years now and he still doesn't want real relationship and I'm in love with him. That is the main problem. I tried to let go but he doesn't want to let go of me. Soon as I forget a little bit about him he turns up with a message or call, and I can't trust him because I don't know if he has anybody else like me.

I asked him that several times and he would make a joke about it but he never answered it. We can talk for hours and we have so much in common but he just can't make that step to enter a relationship with me.

Should I let go or what? I don't know anymore. I'm scared of losing him but I can't stand it anymore. Please help. What is his problem?

TWO YEARS?
He doesn't have the problem (he's got free sex with no commitment). You have the problem. You keep thinking you are in love. Your feelings don't even fit the definition of love, which requires mutual respect, just for starters. You have infatuation and a craving for something you aren't going to get. Chances are he has someone else, but he will lie about it, so there is no point in asking.
You realize of course that you have basically answered your own question by the way you write.
You just need the guts to break off all contact and be prepared for all his sweet talk and pleas.
Hire someone to follow him if it makes you angry enough to realize he isn't going to love you.

Come back here after you break up and we will give you the support to keep it that way.

He has what he wants, and that is a no-strings, sex only relationship. You want a relationship, based on what?

I can't see where he's changed in the two years you have allowed yourself to be so degraded. You know exactly what this 'relationship' consists of, which is a booty call, nothing else.

What is it about you that allows this to happen. Why are your standards so low, and what makes you think that carrying on with his expectations, and your compliance, will result in anything more than it is.

I think you know what you need to do. Stand up and say, simply, no more. Find a man who is interested in a relationship, and start in a place that is not in the bedroom. Learn about mutual respect, consideration, trust, fidelity, honesty and character. It takes more time to learn these things about another person, and that kind of investment on your part, will avoid you being in the position you are in now.

Please seek counselling to understand yourself better, and why you make the decisions you make. Understanding yourself, will make you a far better judge of others that come into your life.