The answer to this question depends on which version of Black Widow you're asking about!
In the Marvel Cinematic Universe (MCU):
- Natasha Romanoff has had several romantic relationships.
- Clint Barton (Hawkeye) and Natasha had a close bond and shared a kiss in Avengers: Age of Ultron.
- Bruce Banner (Hulk) and Natasha also shared a romantic moment in Avengers: Age of Ultron.
- Alexei Shostakov (Red Guardian), Natasha's ex-husband, appears in Black Widow (2021). They share a passionate kiss, despite their complicated history.
In the comics:
- Black Widow's love life is more complex and has included relationships with Daredevil, Captain America, Iron Man, and Wolverine.
While the answer to "Who kissed Black Widow?" depends on the context, these are some of the most notable romantic moments in her history.