Anthony Edward Stark

"You're swallowing," Tony said with all the patience of a lover as he laid there, half blissed out. He should have been squeamish, turned off at least, but there was something soothing and wonderful in the way Steve's saliva pressed to his wounds.

Why?

"That means you're consuming-- Well that just sounds disgusting. It feels good. Being licked tends to but not exactly where you're licking. There's something in your saliva. Not an anticoagulant. But close."

He moaned. He couldn't help it.

"What are you?"