He's Cute

Wanda Maximoff and Natasha Romanoff have been together long enough to know exactly what - and who - they want. Their relationship is strong, passionate, and fiercely private, but lately they've found themselves wondering what it would be like to let someone else in. Finding a third who could handle an Avenger and a former assassin, though? Easier said than done.

They certainly never expected that person to be Y/N Y/L/N, the Avengers' shy, ridiculously intelligent tech guy who spends more time repairing their gear than saving the world.

Y/N has always assumed Wanda and Natasha barely notice him outside of malfunctioning comms and broken equipment. He has no idea that lingering visits to his workshop, playful teasing, and increasingly obvious flirting are anything more than being nice or friendship.

Until one night, Wanda and Natasha decide subtlety clearly isn't working. And Y/N discovers that being summoned to their room has absolutely nothing to do with fixing their equipment.