When I worked for a public library, one of our regular patrons came up behind me while I was shelving books, grabbed my shoulders and squeezed hard. I ducked and twisted out of his grip, glared at him and said, "What the hell?" He got defensive and said I looked like I was stressed and thought I could use a massage, adding that, "It's ok, I'm a physical therapist."
Ok, I know, preaching to the choir here. Still. For one thing, I wasn't stressed. I'm INTJ. I don't get stressed. I give other people stress. :) For another thing, consent was neither requested nor given. A physical therapist of all people should understand that you don't touch another person without consent.
Besides consent, what if I'd had a shoulder injury? He could have caused real damage. Finally, his breath was disgusting. He'd had a meatball sandwich for lunch. I could smell the garlicky meat sauce on his breath. It was gross.
I stayed as far away from that idiot as I could after that. I think from time to time, he would try to make amends. He even gave me a Starbucks gift card. I gave it to a co-worker. I wanted nothing to do with him after that. Once trust is broken, it is difficult or impossible to repair.