How to Respond When He Says, Are You Mad at Me?

"I have to put some stronger boundaries or parameters around how we can tell him that you have feelings for him," she says. "He seems like a really cool dude, so for the fact that he's kind of dicking people around ... I know that I want to be with him and I also know that I can't be with him." She asks: How am I going to respond when he says, are you mad at me?"