I've helped a couple of escorts with computer stuff (setting up a scanner, helping design a brochure for a new business he was starting). With one, the "work for session" was worked out ahead of time; with the other, he reached over and opened my shorts when we were close to finishing the work.
I ran into another working guy one evening at a local bar, he'd just been evicted, I offered him a place to stay that night. I truly meant it with no strings attached, I showed him the spare bedroom, but soon after I went to bed he walked into the room naked and crawled into bed with me, and we had a fun time (but short, since I had to get up for work the next morning).