For some reason, Credence and Graves end up in a situation where they HAVE to share a bed. At first they lay really far apart, but Credence moves to his side, and feels Graves dick hard against his ass. He doesn't know what to do, so he movies a little because that feels good. Graves takes this as consent and basically rubs one off on Credence's ass. After he's done, neither of them talk about it again.
Graves/Credence, bed sharing/grinding