Seek psychological answers

Communicate with him well. He is the truest side in front of you. At this time, people are very fragile, mostly caused by psychology. You must understand him. It's not that he doesn't love you, it's just that he may have inferiority complex at this time. Because the family is not harmonious, he will worry that he can't give you a good future, so he will become strange and different from before. Don't blame him at this time, take care of him more.