Strip club

My boyfriend is going to a strip club for his 21st birthday with his friends tonight, it's his first time going to one. I'm ok with it, I've gone to couple of strip clubs myself just to hang out with my guy friends. My problem here is he told me one of his friends is paying him a lap dance "as a gift", I don't know how I feel about this I trust him but the idea of having another girl over him isn't my cup of tea.     How should I take this "gift" his friend is giving him??