James Kennedy and Kristen Doute got into an explosive fight on the latest episode of Vanderpump Rules after Jay Taylor spilled the news that they hooked up!

Waking up after a wild night of drinking in Playa del Carmen, Taylor told his girlfriend, Brittany Cartwright, that he believed the exes were together in their private pool.

At 7:30 am Taylor says he saw Doute and Kennedy "drinking in the pool," and that the cushions were "oddly arranged," leading him to believe they had sex. "Slow down Sherlock Holmes," Cartwright warned him, but he was convinced of the hookup. "I'm going to be a detective in my next life."

Adding to the mystery, Stassi Schroeder noted just the night before that Doute and Kennedy were acting oddly flirty.

"Seeing James and Kristen drinking and laughing together is fricking weird. These are two people that hate each other. Not making sense."

Doute didn't sleep in her bed all night and when she and Schroder were finally getting ready for the beach she showered off, saying: "I have sand in my vajay."

The guys all went golfing and Taylor told them that he saw the pair at his pool at 7:30am.

"James did you hang out with Kristen last night?" Tom Sandoval finally asked Kennedy. "Did I what? Hang out with Kristen? I mean a little bit but not really."

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Taylor exploded with laughter, but Kennedy was confused.

He said in his confessional that "hanging out" was drinking and "hooking up" was sex and he didn't "hook up" with Doute.

Back on the golf course things got ugly.

"Leave me alone. I'm over Kristen, I don't think she's sexy or hot at all. I have a sexy girlfriend. I don't cheat on my girlfriend."

Taylor quickly called him out, saying: "You've never cheated ?" and Kennedy clarified "On Raquel, never."

The guys were relentless with Kennedy, accusing him of hooking up with Doute and he started crying. "You're all making me feel upset now. I hate you man," he said to Sandoval.

Back at the resort, the girls told Doute what their guys had told them.

"Kristen, I have to say something. When Tom got back from golfing the guys said you and James hooked up," Katie Maloney told her.

"Bull f**king sh*t. Oh! I'm going to get really angry," she said.

Schroeder called her out, saying: "You can't get yourself in this situation. Do you think you blacked out?" and recalled Doute lying about cheating with Taylor and Kennedy in the past.