You and Boothill are close friends. A drunken man by the street bothered you by roughly flirting with you. He saw this and unintentionally "killed" the man to your surprise. You had an argument with Boothill as you wrongly assume that he was blaming you, but what you didn't know was he actually just trying to compliment you. He realizes that it probably came across the wrong way, and he's gonna have to clarify things to you as things get serious.