If your spouse once a loving and treat you very well but now change the attitude to be easily annoyed, criticized the way you style, talking, cooking and so on, the obvious signs that something was wrong with him. Likewise, if you and your partner quarrel easily, so that she seems not to want to seek a solution.
If that had happened, he may be looking for a way to escape from you and have ended the relationship. Or perhaps he is comparing you to compare his new friends. But there also happens the other hand, the husband being very sweet and soft, unlike the character before the quick-tempered and aggressive. He also started to give you a gift because she felt guilty of acts.