Forget about Brandi Glanville making out with Carlton Gebbia. The story that seems to be on everyone’s lips on the Real Housewives of Beverly Hills is whether or not Mauricio Umansky cheated on Kyle Richards.

When RHoBH airs its fifth episode of the season, tensions rise even further over the unfortunate rumors.

“Lisa’s hurt my feelings now,” Kyle confides to Mauricio, clearly referring to Lisa’s comments about the rumors. “She knows what we’ve been going through with all the lies and the tabloids. Then she makes a joke twice, one of the jokes in front of Portia.”

Since Lisa has said numerous times that she doesn’t believe the gossip, Kyle can’t understand why she keeps bringing it up.

“I think this is one of those situations where Lisa and Brandi have something to talk about against Kyle,” Mauricio says to the camera. “They are having issues with Kyle, and they’re gonna do their best to exploit that.”

Watch this sneak peek from the RHoBH Season 4, Episode 5, then make sure to tune in when it airs on Monday, December 2 on Bravo!