My new man patts other woman on the bumm...is this normal?

My new man owns a bar. Hes 54. I'm 39. Hes a hot man. However, he seems to hire one type of woman. 20 - 22age group. Blond. Huge . Skimpy clothes and peachy round bums. I've been at the bar and i notice he s their bums alot or while talking to them rubs their backs and his hand wanders to their backsides where it can rest...for a long time. They seem ok with it and flirt like crazy. Hes says hes being friendly not y and that men like that type of woman behind a bar, it brings in the customers. What do you think