What is the psychology of married men telling the opposite sex that they are single?

I think it is a special psychology for married men to tell the opposite sex that they are single, because I think such boys are particularly hateful. I think since you are married and have your own family, you should be responsible for the family, but if you tell a heterosexual that you are single, you especially want to stay with her. I think if every married man tells the opposite sex that he is single, I think he has great distrust of his marriage. He may do something out of line and feel sorry for him. I think this is a way to strike up a conversation with her own partner. I want this woman to have a special liking for him. I think this kind of heart is terrible and annoying.