First of all, you decided on the reason why you want to stop talking with this guy. And the reasons, as you understand yourself, can be very much. Let's start with the banal: you just got tired of this person, you are disappointed in him and his communication, he lost his importance for you - he began to annoy you, you met another guy much more interesting than him. In short, whatever the reason, identify it. Having understood yourself, you can bravely argue the fact why you do not want to communicate with this guy anymore. Also reveal such factors as how and at which moment it was you who realized that you do not want to communicate with him, whether you will be able to get rid of the habit of communication (relationship) with this person and in general this is your one hundred percent solution. If all these arguments are not in his favor, it is better to change this situation faster. Do not know how to behave if you do not want to communicate with a guy anymore? Tell him everything sincerely and correctly. Put in the knowledge that you do not want to continue to communicate with him. You do not want to see him in the list of your friends anymore, to share love and fellowship with him. Believe me, if the guy is not stupid, then he must understand you. Do not try to impose guilt on the guy. Do not blame him for being guilty of what is happening. Do not try to impose on him that you stop any relationship with him, precisely because of his behavior - even if it's true. Making him guilty, you thereby, very much touch his inner self, revealing his eyes to his imperfection (usually the guys are very worried about this). And you, by this, give him a false hope that if he changes himself, overcomes the vices of his temper, you will resume your communication again. After all, the reason, as he will understand only in him and in his character. Better make him dissatisfied with you. By the way, be ready to the fact that the guy does not immediately give up and will leave forever out of your life. All men are owners by their very nature. It is for this reason that it is very difficult for them, guys, to reconcile themselves with the idea that they are breaking off any relationship, thereby once and for all deleting them from their lives. Therefore, do not be free, the guy will try, clutching at any straw, fix the situation. I decided to burn the bridges - do not turn to his behavior, no attention, sooner or later he will reconcile, forget everything and maybe he will understand.
Talking with a guy is best, appointing him a meeting (by phone call or SMS there is no point). Before a conversation, it is best to do preliminary training. Scroll in your head for yourself everything you want to tell him and think over the answers to, as you think, possible questions on his part. The main thing during the conversation is not to delay with long pauses, at these moments the guy will be able to verbally press on you. Directly start your conversation with what you thought for a long time to make such a decision. And then set out the facts. Try to insist that it will be better for both of you. If you are sure that you will not love him, tell me how it is. Between the words, thank him for the pleasant moments of your relationship. Try to talk as coolly as possible, avoiding emotions, do not ask anything from him. Begin - speak with a straightforward text without any hints. If you do not want to offend - talk, calm down, and if you do not care - fall into absolute disregard. I decided to reassure - once again, remind that in his life there will be more than one good and beautiful girl, so do not stop at one or the other (bear in mind). As for the resentment on his part, then most likely this can not be avoided. So choose yourself or you will be together, or quarrels can not be avoided. Not all guys are able to understand when they are given from the gate - a turn.
After your conversation, try to completely disappear from his life. Do not look for him to meet, erase the number, remove friends from the social network. And most importantly, understand once and for all for yourself that it is no longer in your life. This, in the first place, is necessary in order that suddenly you suddenly, by an old habit, do not start to ask yourself the question: "How will they return it?". I leave the point, that's your decision. The main thing, if he has feelings for you - not to let him fall in love with you definitively. If it's friendship, do not let the feeling of attachment develop, otherwise in both cases it will be even harder for him to accept the idea that he has lost you irrevocably. So an immediate conversation is the only right decision. But, and if this has already happened, you will have to try to break it down, turn it into an illusion. In such a situation, of course, it will be much more difficult to break the relationship because any actions on your part will be subject to its opposition and attempts to leave everything on its metas. In this case, the main thing for you is not to break down and not go on about your own and the first turn, his emotions. Wait that he will stop loving you and go himself to the background, there is no sense. Do not sacrifice yourself because of your pity. You will show pity for him - you will hurt yourself.
Do it right now, because sooner or later it will still have to be done. But to leave without causing him pain, it will not work. So do not delay with a break. Your frankness will be worthy of respect.
If you feel sorry for him or if you know that he has no one else besides you, just introduce him to one of your girlfriends, which, you are sure, like this type. There are no suitable girlfriends, do not be sad about this. All that was required of you, you already did. And remember, no way back - now only ahead. That's how you should behave with the guy with whom you no longer want to communicate never and under no circumstances.