You can choose to believe him, but you have to tell him clearly: Do you believe him or not? that this is not the important question. The point is that you care that he will go to zhenai while he is with your other half. Tell him that he makes you feel uncomfortable and that you are not valued and respected. As a man, especially when talking about an object, it is very important to think from the other person's point of view. Just ask him directly. If you ask someone to introduce you now, he will be happy! ?