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Lisa Vanderpump‘s party planner thinks Katie Maloney should lighten up.

Kevin Lee — who has worked with Oprah Winfrey, Jennifer Lopez and Mariah Carey among others — made what he thought was a harmless comment about Maloney’s weight on Monday night’s episode of “Vanderpump Rules.” But the remark wasn’t taken lightly, as Maloney cried to Vanderpump, 57, after the exchange.

The mastermind behind SUR comforted Maloney and told her that she was “the most beautiful girl at the restaurant.”

“I found [Maloney’s reaction] kind of weird,” Lee told Page Six on Tuesday. “It was a funny kind of joke that I made. I had known her for a while. I thought it would be fun to say things like that to her.”

“What happened?” he asked as Maloney passed appetizers during Vanderpump’s Beverly Hills magazine party. “You were much thinner than this. You gained a little bit of weight. You have to work on it. Seriously, I’m telling you as a friend. It’s out of control now. I can tell.”

But while Lee insists he “said it like a friendly comment,” he feels the entire exchange “got out of hand.”

“I didn’t realize until she really reacted really badly,” he explained. “I feel so bad. It wasn’t bad intentioned at all. It was something like, ‘Oh my god, you look a little different than I expected. I haven’t seen you in a while.’ She got really upset.”

Lee says he’s seen Maloney, 31, since the incident and made it clear he wasn’t intentionally trying to make her upset, but it’s unclear if she’s forgiven him.

“She’s very sensitive these days,” Lee said.