i have a problem in xx!

You did not say what is your friends genre. However, if you used to do with him/her sufficing all your fantacies before, wether you like it or not it is both of your actions will count. If you think getting rid of your friend will set your freedom free, do it...

ok dear if your friend does not control himself so first you should make him understand and try to sort out the problem and if he still does not unerstand so what I can suggest you dear I dont have much experience in that

It is upto you, to say a firm yes or no. If you love him/her, it is always better to cooperate even if you do not like it. Of course if you feel that this a chore, you can always refuse, but you might loose your lover. The choice is yours.

since between him and you,it looks like you are the one who is in control, you should be the one making the move to stop it. If you are not enjoying it, or you feel that it is not right then do what you have to do. Your friend,since he knows you will give in anyway, thats probably the reason why he keeps doing it.

everyone can give suggestions but decision making is in your hands, 1st of all, you were already doing this with him, but not interested now.. justify yourself whether you don't want to do with him or with anyone, if u don't want to do with him, make him understand and please help him to come out of it.. it is his age which makes him want it.. divert his mind and make him not to think about it when he sees you.. don't hurt him.. and u cant stop him unless you make him realize that what he is doing is wrong.