Riley attempt to not look surprised when she kissed him so deeply because tensing might send the wrong message but he ended up moaning when their tongues touched and stroke against each other. The fingers that had been stroking her cheek tangled in her hair, keeping her close. A few more of these and Riley's confidence would probably grow more confident.
The arm that was around her back brought her closer and he hoped against all hopes that he'd be able to restrain himself, otherwise it might be slightly uncomfortable.