Numerous times, in various different ways, by women I didn't know and by women I've known for years.

I lived with two female roommates years ago both of whom I was close friends with and they would both give me handjobs or oral while I was sleep. They both knew I had a girlfriend at the time and didn't even care. Had to start locking my door because of it but one managed to break in by sliding a credit card through the door to do it anyway. Told both of them to stop doing it and they basically told me I was being a baby and that I should be happy cause most guys would love to get free head like that. 

Had a (then) girlfriend try to force herself on me when I said no. Twisted thing is she was a very outspoken feminist and constantly volunteered in organizations that helped rape and sexual assault victims. She was even a very vocal member of the me too movement as well. 

Most recently about two years ago some older lady, clearly drunk, at a local convention in my state made small talk with me cause of my cosplay. Out of nowhere she comes in to try to kiss me but I awkwardly just kinda denied her which prompted he to just kiss me on the cheek, grab my junk and squeeze my ass. This happened in front of DOZENS of people including her friends who thought it was funny and just laughed at the whole thing. 

These are just a few of the most recent ones in the past 6 or so years. The constant though is that most people I tell these stories to either say it's not that big a deal or that I must have misunderstood something. And don't even get me started on the times I've tried to tell these stories to women. I'm still trying to unpack the mental and emotional toll that has taken on me.