Stiles babbles Peter's name as he comes, tells him how good it is, how he's Peter's and Peter is his, always, always. He's not even aware of half of what he says, really, too far gone from pleasure to pay attention. He hasn't even realized the water's gone cold or that Peter's turned it off at all.

After a few moments the haze of pleasure starts to fade and Stiles slumps against the tile wall as he pants, tries to catch his breath. He groans in appreciation and shifts around but doesn't pull away from Peter just yet, enjoying the feel of the man still inside of him.