He said he wanted me to be his confidant.

What do you mean? There may be friendship between a man and a woman besides love, but I personally think that pure friendship is rare. He just wants to find a lover, which is obvious from what he said. Do girls know that they have to bear the gossip? What a big joke. There is a saying that a straight body is not afraid of evil shadows. It seems that his heart was impure from the beginning. His so-called confidante may be more than just spiritual communication. What he wants most is physical communication. He wants to get passion from you that he can't get from his wife. Perhaps this is a bit excessive, please don't be angry, but I still ask the landlord to think clearly, just be an ordinary colleague with this person and don't give him a chance. A person who is not responsible for his family should not expect to be responsible for you, not to mention that he has not given you any promises and is still playing the role of "knowing himself". You have a boyfriend too. If you love him, please cherish the present.