The most important thing in this situation is not to panic, but rationally and calmly comprehend the whole purpose of your relations with him. And suddenly, you're just wasting your time panic, and it's completely up, not that his feelings for you have faded. Never make premature conclusions without being convinced of their true basis and authenticity. This can lead to an undesirable result. For example, you can, by your own, direct pressure on a man, just unwillingly, just push him away from yourself. Men do not like it when they are pressured and, even more so, trying, for him, to guide his feelings. First of all, figure out the reason for its sudden cooling against you. Look at your relationship, as if from outside. Maybe it's just an accident, he's busy with work, or tired of everyday life, or he has some problems that he does not dare to share and discuss with you. Try to show tolerance to him and, without hesitation, in a civilized way, correctly, without any reproaches and reproaches, ask him about what is really going on. Scream all to the left and to the right: "I have a feeling that my beloved man has stopped loving me," - it's not worth it. Maybe he did not stop loving you at all, we often know how to twist our subconscious very well and thanks to this, we start to give out the unreal for the existing one. Try to dilute the situation with memories, as you used to be good together, the conversation should be sincere, you must make it attract attention. And, thereby, bring your conversation to the emotional level. Only at this level, the man will be able to trust you and tell the true reason, such behavior.
If your fears are confirmed and the whole point is that his feelings for you simply disappeared. Again, do not panic. Remember that no matter how you feel yourself, humiliated and devastated, try to pull yourself together and try to prevent the loss of a loved one. Of course, this is in case you really need it. If, you're just tired and do not want to fight for his feelings. Just let it go, you are not each other's property, given to eternal possession, but living people with their ambitions, emotions and the right to a better personal life. If you are confident in yourself and that the situation can not be fixed, just let it go with peace. And you will certainly find someone who loves you. I decided to fight for his love and go to the end, then get down to it. Here it is worth remembering that it's not worth it to delay. So, as he still can, for himself did not exactly decide what, he really wants from life. Therefore, to change the situation and take it into circulation, it is necessary while it is still "very hot", that is, until the man finally decided to make a decision that will not be in your favor at all. I think some valuable advice on how to behave in this situation, you do not interfere.
First of all, if you live together under one roof, immediately try to leave, that would not finally break the wood. After all, as we know, from love to hatred is only one step. So, do not delay this case. Try to live separately, maybe your feelings will resume, and you'll be able to calm down and make the right decision.
After that, to get it with constant calls and visits is not worth it at all. And even more so, roll up tantrums and chew snot. That you will not make him love you again. And even on the contrary, you will push away even longer. Except, like pity, he does not feel anything for you. Pride is your main "horse". Take care of your appearance, visit a beauty salon, a hairdresser, in a word, "bloom" to him in spite of all his beauty. You can even radically change your image. Let him see how good you are without him. Believe me, it will definitely hurt him. All men are proprietors and egoists, and even when he thinks that he does not need a woman at all. But she sees her contented, well-groomed and self-assured and without him, this is very offensive to his ego. Be sure, he'll call soon. Of course, from the first bell it's not worth to take your position at all. Play with it, tell about how you live without it, only do it in colorful and positive tones. Add oil to the fire, let it reflect on who he lost. See him, you can, already on the third, fourth bell. The main goal of your meeting is no obsession on your part. Just meet, discuss the pleasant moments of the past. This meeting should, directly, have an inconspicuous character in the meeting. Of course, to stick to it is not necessary, as they say, so as not to frighten away, but an easy flirting will be appropriate. You must do everything possible so that the result of this communication is the premise for the next, the so-called "date." It is from him and start acting like a true seductress. The psychology of a man is a completely unexplored part of his life, therefore, just as easily as to stop loving, he can love you again. And, moreover, even more power than when these feelings were for the first time.
So, know that everything is in your hands and depends only on yourself. If your mind often flashes a thought: "I have a feeling that my beloved man has stopped loving me" - do not take it as given as a fact, but try to understand the reasons and change yourself. And finally, take it to your information, if the feelings of a man, have become quiet to you, pay attention to your behavior. Maybe it was by his behavior that you pushed him away. And, that, more, do not step on your own rake, change your attitude to things and your man, directly.