Kinda got the ick

I could use some advice. I've been vetting a new Dom for about a month now. We went out on our first official date the other night. While we were sitting in the movie theater, he grabbed my hand and put it on his 🍆...not on his pants but actually on an erect and exposed 🍆. Any time I moved my hand away he would very casually direct my hand back. I definitely got the ick.

Exhibitionism is not one of my things. It's not on my limits list, but will be after this. I'm too afraid of getting caught to enjoy it.

I've decided this is not a dynamic I wish to pursue. I am extremely uncomfortable with conflict and an always afraid of hurting someone's feelings. I'm seeking your advice as to how you would like to hear that you've made someone uncomfortable and they are no longer interested?