I'm thinking love, man. Though they probably knew each other via politics beforehand.
To bring up something we were talking about last thread, we should hopefully find out more about Moon and Toffees past interactions in S3. I strongly suspect there's more going on there than meets the eye. Well we obviously don't even know what Toffees motivations are at all, so that's a good starting point.
pic is from one of the storyboarders on the show, done fairly recently. note young Moons posture and body language. speculate awayyyy