Mom's Friend 2015

The male protagonist is a boy about 19 years old. His mother wants to go out and let him stay at a friend's house. The woman has a good figure and the man is promiscuous. Later, he accidentally discovers that the woman is having an affair with another man. As a result, he becomes even more addicted. He follows the woman to spy on her and discovers that the woman is having a fierce fight with a man in the fitting room. It is a Sanlitun plot. Later, the man cannot resist the temptation and sleeps with the woman. Later, he found out that the woman was still having sex with someone else, and the two had a big fight and broke up. The hero fell in love with another woman.