Dean didn't mention that she'd replaced a dude with little to no chest hair. Granted, he shaved his off too, but that was so if he had to tape a bullet wound shut, he wouldn't rip out hair after it healed and add insult to ex-injury.
But he wasn't thinking about that when he got on his knees and started kissing her harder, kissing southward down her (freakishly flat) chest to run his teeth over a (augh, no boob!) nipple.