A concept: Bucky goes into a funk where he’s not… dangerous, but nothing really makes him happy. Everyone agrees that this is preferable to when he’s dangerous but it’s still sad because he’s not happy.
Bucky is sitting in the living room, being sad, when Tony crouches in front of him and reaches out to poke his nose. “Boop!” Bucky is so startled he doesn’t even know what to do, and Tony gets up without requiring a response.
It isn’t until twenty minutes later when Natasha comes in and, face betraying nothing but eyes twinkling with humor, says, “What the fuck is on your nose.” Bucky reaches up, feels something, pulls it off. It’s a sticker. It’s shaped like a heart.
Bucky smiles for the first time in days.