Is it wrong that I dont want my boyfriend giving girls in bikinis rides on his new jet ski?

My boyfriend always tells me he doent want to be rude when women cross boundaries. I know that if I did some of the things that he thinks is ok in his mind when other women do it to him, to othe men, he would think that it wasnt cool. I know that if I was out with him and his friends wearing a bikini, and asked one of his cute male friends to give me a ride on the back of their jet ski, that he would not think that would be ok. Why is it that it would be too rude to tell a girl that is scantly clad no when she wants him to give her a ride on the back of a jet ski? I don't get it..