Tell me more about my boyfriend. What does this mean? I am so angry!

First of all, when did your boyfriend ask a girl if she had a boyfriend? If he asked before he was with you, that's fine, but if he asked the blind date girl like this after he was with you, he still had a problem with that girl. Judging from the situation you described, it should be that after being with you, he also asked the girl if she had a boyfriend. This kind of behavior is actually not very good. Of course you should be angry and mind.

Obviously, he can ask such a question, which means that he may not be very satisfied with you, or he still has a good impression on her. But that girl is married, can he still comment that you are married? It means that he really doesn't have deep feelings for that girl. When you are angry and mind, you should tell him about it, or you can let him know that you like him and make him realize that he has a girlfriend and someone loves him and should not ignore you.