What happens during wet dreams?

So for the past 10 days or so, I've had 3 wet dreams (Day 106, 111, and 115). Before that, I think I went almost 2 months without any sort of ejaculation.

I'm curious about wet dreams and how they affect nofap progress. These are the main things I'm wondering:

1. Does having a wet dream release dopamine in the brain?
2. Do wet dreams hinder the process of rebooting?
3. Is it considered a relapse if you PMO'd or MO'd in your dream?
4. Do wet dreams have side effects when you wake up the next day?
5. How does your body decide whether or not you will have a wet dream that night?
6. Is having too many wet dreams a bad thing?

If anyone has any answers to these questions, please share! It would not only be helpful for myself, but for other fapstronauts who were worried or curious about wet dreams.