I think the relationship between Clint and Natasha is one of my favourites. He trusts her so much that she knows his family, as we find out in the second Avengers movie.
I had a hard time telling whether this was Natasha Romanoff or Maria Hill, tbh. But if you look at her belt buckle, it looks like Black Widow’s symbol, so I’m going to go with Natasha. Do you disagree? Discuss in the comments!