He doesn't wear any kind of chastity device (though I do imagine the day when he WILL) so I was concerned about his cheating after the fact when we were apart. I assumed I would be able to tell if he had cheated, and told him as much.
He was able to do four passes at it, with increasingly more time in between. There was not much pre-cum on the mirror after the first one (just five or six drops) but he licked them easily. Pre-cum doesn't bother him as much as cum, I think because if there's cum, it means he's had his orgasm, and he's a LOT less interested in any of the fun stuff after that. After the second and third passes, there was a bunch more liquid on the mirror, and I was probably as excited as he was watching him do it.