By the time you figure out the rules I broke

Holding him down is probably for the best as Jiang Cheng arches under that mouth, the licks and teasing leaving him moaning the other teenager's name, his hips bucking up against that hold, even if he doesn't actually move all that much.

He does keep lifting his head to look, before it drops again when Huaisang's tongue finds a new place, drags another moan out of him and then he reaches down.

"..Come up here, I want.." His tongue darts out, wets his lips.