Warning: Spoilers for The New Avengers #1!Black Widow and Bucky Barnes, Marvel's on-again-off-again couple, are officially on again. The two assassins have had a complicated love affair to say the least, but whenever they do share the panel together, they prove why many fans consider them to be Marvel's greatest romance. They were most prominent during the 2000s, and in 2025, Marvel has revived the relationship.