My boyfriend suddenly gave me the cold shoulder. Whenever he was free, he said he would go out to exercise, and he was always tired when he came back from work.
He is looking for a very suitable excuse to avoid you, or there are other unexpected situations. This indifference is not a good phenomenon. He can't bear to hurt you, but he can't speak his mind. Call him to your side. Don't lose your temper with him, don't ask him where he is, and don't look at his privacy. As long as you chat sincerely, you will know everything!