1. Gentle, tender, cuddly sex. Sometimes Rhinox ties Optimus up, but he always plays the gentle dom.
2. Optimus, definitely. Rhinox's paint is just there to cover the metal.
3. Sometimes Rhinox thinks Optimus expects miracles out of him. It doesn't help that Optimus usually gets them.
4. Well, when Optimus died, Rhinox didn't spend time grieving; he just got to work bringing him back. I dunno whether that's healthy or not.
5. They win, go back to Cybertron, and spend the rest of their days gallivanting around the galaxy increasing their Learnings.
6. ....Beast Machines. XP