Is it OK When Husband Likes When His Wife Flirts?

Just curious. We are happily married for over 10 years. I think it's very erotic when my wife flirts with others. I guess it's because I feel validated as a man when others find her attractive....or....I'm a sexual deviant that secretly wants my wife to.......Not sure, probably a little from column "A" a little from column "B" What do you people think?