He bites his lip and nods. He leans forward, pressing his mouth to Neil's skin. First, just the skin of his breast, but he kisses his way towards the nipple. It's just like when they're messing around normally. They play with each other's nipples, tease and see what gets them going. Except now Neil's chest is softer, fuller, and his nipples incredibly, incredibly sensitive. He teases him now, with lips and tongue and even a little teeth on one side, fingers on the other.