There's some people who expressed interest before that haven't posted yet.

For the Cinematic Universe Hulk x Widow was Widow's second best shipping option behind Widow x Widow which I feel like most would have preferred anyway. She didn't have to be paired up with anyone.

With the others I saw her as more of a sister/best friend figure to both Cap and Hawkeye.

She was more like Tony's babysitter and she and Thor didn't really have any chemistry.