Kenny & Lydia
"Didn't say that either, but isn't that why everyone has sex? Because 'why not'?" That or reproduction, but he definitely wasn't in it for that. He just liked sex because it was fun and something to do. Not to mention it felt good and the complete opposite of his deaths and the pain that came with them.
"I should've, though. Just to make it more interesting," he grinned. That would've been kinda funny to bleed to death at a Halloween themed birthday party.