Getting dicked down at a conference [FM]

I’m (22F) volunteering at a conference. Exhausting work. But there this guy whose also a volunteer. I think he is older than me. We have exchanged a few glances. But never really had a conversation. I caught him checking me out quite a few times today. I don’t mind the attention. Usually I would have basked in it and left it there. However, I woke up with my hand inside my panties today. But I didn’t get time to pleasure myself as I had to leave for the conference super early. So naturally I was horny and frustrated. And he happened to be at the right place at the right time.

We were standing at the back of the audience so I went up to him and stood right in front of him with my back on him giving him a good view of my ass (I was wearing a bodycon dress). Then I started moving back towards him slowly trying to be subtle. He didn’t move away so I continued until I could feel his dick against my ass. I could literally feel it twitching. I reached behind my back and gave it a squeeze, felt it getting hard and walked away to the front of the hall to assist someone who had raised their hand.