Bethenny Frankel is going through a break up, but not with a lover.

On Tuesday, Us Weekly reported that the 47-year-old entrepreneur has ended her friendship with fellow Real Housewives Of New York star Carole Radziwill, 54.

The magazine revealed that a source connected to the women disclosed that Frankel became 'jealous' of Radziwill's friendship with Tinsley Mortimer, 42.

Ex-BFFs: On Tuesday, Us Weekly reported that Bethenny Frankel has ended her friendship with fellow Real Housewives Of New York star, Carole Radziwill

The source told Us Weekly that the former friends began to drift apart as they each dedicated time to different independent projects.

The magazine revealed that their insider said that 'things turned acrimonious while filming.'

Us Weekly also reported that things went downhill after Radziwill began to get close to Mortimer.

The magazine's source said, 'Bethenny's jealous of their relationship. Tinsley has replaced her as New York City Marathon Carole's bestie.'

In a 2017 interview with Andy Cohen on Watch What Happens Live, Frankel revealed that she and Mortimer had a hard time getting close when they first became acquainted.

The Skinnygirl Cocktail mogul responded to comments Mortimer previously made, which referred to Frankel as 'cold.'

The former talk show host said: 'Here's what it is. This is my real life, this is a reality show. If I meet somebody at a party, I go, "Hi, nice to meet you." I don't go down on them.'

It seems that the two co-stars never made it past this situation to become close friends.

New BFF: The magazine revealed that a source connected to the RHONY stars disclosed that Frankel became 'jealous' of Radziwill's friendship with Tinsley Mortimer

In March, Bravo released the trailer for the upcoming 10th season of RHONY.

The sneak peek offered a glimpse into the women's declining friendship, as Frankel addressed their issues on-camera.

She stated, 'I'm not sure Carole is as excited to see me as she used to be.'

Bad blood: In March, Bravo released the highly-anticipated trailer for the upcoming 10th season of RHONY

In May 2017, Frankel also experienced another split, as she broke up with longtime beau, Dennis Shields.

The reality TV star and Shields first met 28 years ago when he dated one of her high school friends, who he later married.

The Skinny Girl founder stayed in the same social circle as the banker through mutual friends, and the duo began dating in 2016 after he split from his wife.