Dancer coming

So last night I reconnected with a past ATF who has been traveling out-of-state to work in greener pastures. But she was back at my favorite club last night and things picked right up where we had left off. Midway through the first song she asks "Was that you or was it me?" I had no clue what she was talking about and then she said it was the moisture on my pants. I'll admit to the occasional quick trigger, but nothing ever that fast. And the more she kept grinding on me, the more I could feel the dampness. I was just about to freak out about what was wrong with my body when she said "It's me, I'm wet down there," with a good measure of embarrassment. But she also kept grinding away, but kept apologizing for "wetting" me. Finally I told her I actually liked it and that she can wet me any time she'd like. A few songs later we finish, I look down and there are no obvious signs of her arousal. Go back to my seat in the main area of the club and suddenly the blacklight effects have illuminated a wild pattern on the left front side of my pants that looks like the Gulf oil spill. I just laughed and pulled out my tucked in shirt to cover the new "art." Anyone else experience something like this? I've had plenty of comments from dancers saying their pussy is getting "so wet," but never had actual proof until last night.