Challenge: Tony's testing out some new armor, but he's late getting home -- which means Pepper has every reason to experiment with some of his armor's more interesting systems.

Tony is trying very hard to be the perfect boyfriend. Maybe too hard. But that's okay because Pepper has a simple solution to get Tony to relax and nurture his other relationships too. "Hello, Captain. What can I do for you?" "It's about Tony," he says immediately, his soldier's efficiency not allowing for any dallying. "We - the Avengers, that is - have some concerns."

One day Steve was going to figure out how Tony kept talking him into these things, he really was.

Tony isn't so much introducing Steve to twenty-first century sex as enabling him. Steve already knows what he wants.

"Oh god," Pepper says. "Are you kidding me?"