I (19f) got my ass grabbed by my best friends bf and I’m not going to tell her

I ran into him and his friends at the club last night. I was out with my girlfriends from work so I wasn’t with my bestie (let’s call her Becca). Becca has been going out with James for 3 years and he’s really really hot. I went up to him to give him a hug and he was really drunk, so he was stumbling a bit. But when he hugged me he reached down to my lower back and rubbed it, then kept going and grabbed my ass. I was v shocked so I just laughed and went to the bar. Then about an hour later he came over and bought me a drink. When he was passing it over, he reached around and grabbed my waist. He then said we should take a selfie to send to his girlfriend to tell her that we ran into each other. As he was taking the selfie, he grabbed my ass again.

It didn’t go any further than that. I know I should probably tell my bestie but it turned me on so much and I’m honestly thinking of seeing if he will take it any further