I had first wet dream. Don't know if I'm responsible for it.

I had first wet dream since I started PM. I can't remember the last one I had, before I entered NoFap.
Yesterday I had pretty wild sexual thoughts about my girlfriend, as we are going through a break up, and I grabbed my crotch few times but never had full erection or moved my glans. It occurred to me before sleep, that this might happen, so I tried to stop thinking about it and I eventually fell asleep thinking about something else.
It happened few hours before morning, so I'm kinda sure I had no influence on it, but I'm wondering if I could have prevent it by keeping my head cold during the day.
Maybe I should not reset my counter if it doesn't happen again?