Thanks for your comment. The problem is how to break it off with him without losing his friendship. How do I tell him i want to stop sleeping with him?

He may only be interested in friendship with you if it comes with sex. You may have to let him go, out of your life. It is sad for both of you, but sometimes people change and outgrow each other.

On the other hand, people break up and stay friends all the time. Maybe not right away if there are hurt feelings, but it seems like the one who is more likely to have hurt feelings is you and not him... If you are the one who is more emotionally attached though, it may not help you to continue with the "friends" portion of this relationship if you really truly do want more with this guy, because you may need to break it off emotionally as well as physically to find someone else who meets all your needs. And if he does turn out not to want to be friends with you if there is no sex, then it's no loss to you anyway. Tell him you don't want to have sex anymore, tell him why, and then say you hope you really can stay friends, and that you mean that. You expressed yourself very clearly in your question and if you can keep it clear and simple and not super angry (it's ok to be sad) you'll have the best chance possible of staying friends.

How do I tell him without losing his friendship "No more sex but still be friends"?

That's what you tell him. Exactly what you said in quotes above. Tell him why. If he doesn't want to be friends with you after that, believe me, you won't really want to be friends with him. If he's hurt by the breakup, give it some time, but this is a simple situation, even though it's hard.

thanks for your input. Perhaps I can explain more and you can advise more? ok, we do have a relationship... called 'friendship'. He does not treat me like a regular girlfriend, he doesn't even introduce me as gf, just friend or just my name. We do not go out on dates. Just to his place or my place. His life is busy, he keeps pursuing higher education, which I am all for, but I am not included in his future. He keeps saying stuff like "I'm sorry to say this but I'm happy living alone, doing my own things without anyone nagging me to do things." I understand and accept him for the way he is. He's very self-centered. That's why I want to break it off with him and pursue other guys without hurting him too much. I know I have no future with him. But I don't want to lose his friendship. And I don't feel right to continue having sex with him while I'm dating others. How do I tell him "no more sex but let's still be friends"?

I think you can tell him that you love him and his friendship, but the sex part of your friendship is done because you're going to be dating other guys.

He will be fine - whether or not your friendship survives may be in question. Don't let his feelings get in the way of you having the kind of relationship you want - just not with him.

And, since you're not BF/GF (call me old fashioned, but I think you are, just a fucked up version of it) you have every right to date anyone you want, and stop having sex with him.

Good luck, have fun and I hope you find a great guy!