Is Jason Hoppy getting even with his ex Bethenny Frankel?

It seemed that way when Jason was spotted on Sept. 5 with Bethenny’s worst enemy, Real Housewives of New York City’s Kelly Killoren Bensimon. The two women are famously known for bitter disputes. (“She [Bethenny] hates me for I won't play her gameI like pioneers/mavericks who empower and explore,” tweeted Kelly about her Housewives castmate Bethenny in the past.)

Watch: Nick Cannon Teaches Bethenny How to Twerk!

“They were smiling and laughing,” an eyewitness tells In Touch, on stands now, of the encounter. “I was surprised by their close interaction. Kelly and Bethenny hate each other, so you’d think he wouldn’t be so friendly.”

But Kelly tells In Touch they were just saying hello after running into each other. “We’re not friends,” she says. “He is a very nice guy and a really cute daddy.”

Bethenny: ‘I’d Listen to My Gut Before Marrying Again’

On last night’s episode of Watch What Happens Live, Bethenny made it clear that she has caught wind of Kelly and Jason’s meeting. When asked if she would ever invite Kelly on her talk show, Bethenny said: “I would have Kelly. I mean, I don’t know what for, but I might.”

Bethenny then joked that although she wouldn’t have RHONJ cast-off Danielle Staub on her show, she would invite her over to her home — in addition to Kelly and Jason! “[Danielle] will come over to my house (with) me, Kelly and Jason — and live with us," she quipped. "But not on my show!”

For more on Kelly, Jason and Bethenny, pick up this week's issue of In Touch Weekly, on newsstands now.

Have a tip? Send it to us! Email In Touch at contact@intouchweekly.com.