Riley couldn't stop the groans that came with each stroke of Spike's hand. The vampire knew just where to touch and stroke to make him cry out, whine desperately, and jerk like a spastic puppet with those skillful fingers. He waited for Spike's seat to slide back, and then a second or two more to get on the highway because he didn't want Spike to crash.
Then once they were safely on the highway, his hand moved into Spike's underwear, stroking his cock and pulling it out before sliding even closer. He wiggled himself in between Spike and the steering wheel, then guided the head into his mouth and licked the length, hampered by the tight space but moaning softly, eyes closed at the delicious taste. He craved every bit of Spike, everything about him, couldn't seem to get enough.