Is it normal that my husband flirts with his dentist?

My husband has a history of infidelity and especially flirting. He loves to make attractive women and young women laugh. He loves to have fun with attractive women. He even flirts with women I find unattractive.

Because of his serial flirting, and the development of huge fantasy infatuations that has hurt our relationship, we have been to counseling off and on. We are currently in counseling because I caught him trying to get to know (seeking her out to talk with her often) a good looking woman he works with.

The day after our last counseling session, he went to the dentist. A very young attractive dentist. The night before he had shown me empathy, and said over and over how sorry he was that he had caused me so much pain.

He had recently talked to me about how sensual it is to be a dentist or dental assistant because they had fingers in the the patients sensitive mouths where kissing occurs, and the mouth is a similar opening to the vagina.

He came back from the dentist gushing and happy. He didn't have any cavities. I asked him as a joke if he was able to pick from the toy reward box. Haha. He asked me how I knew about the toy box, then proceeded to tell me the dentist laughingly said he had been a good boy he could pick from the box. So he did, and he thought that was just great.

I asked him if she was attractive and he wouldn't answer me.

Do you think he was flirting with the dentist?