Juan Dixon blew up when he heard that Karen Huger claimed he was secretly dating a blonde woman on Sunday's episode of The Real Housewives of Potomac on Bravo.

The 44-year-old basketball coach told his ex-wife and current fiancée Robyn, 43, who had called him from Mexico, that he loved her and to not let the women get to her. 

'Karen don't know me!' Juan said. 'You know me, I don't go out! I'm nowhere in f***ing DC! Tell them to cut that bulls*** out! I'm going to cuss one of them f***ing women out, Robyn!'

Juan furiously hung up as Ashley Darby, 34, urged him not to be angry with Robyn. 

'She shouldn't have opened that can of worms,' Robyn said. 'She really shouldn't have.'

Initially, Robyn just laughed when Ashley told her what Karen, 59, said about Juan.

Ashley told Robyn that Karen felt that she had her integrity attacked. Ashley said that Karen also said something else but asked her not to tell Robyn about it.

'What did she say?' Robyn asked.

Ashley then revealed Karen's comments about Juan.

'What she said is that Juan has this girlfriend who looks like Karen,' Ashley said.

Robyn started laughing. Ashley said that Karen told her Juan had been dating this woman for years and was in Georgetown with her all the time.

'Like they walk down the streets holding hands and stuff and that she thinks you know about it,' Ashley said.

Karen said none of that was true and planned to talk to Karen about it.

When the episode titled Indecent Disclosure started it was day three of the girls trip to the Riviera Maya, Mexico. Gizelle Bryant, 52, sat down with Mia Thornton, 38, and asked Mia what she was planning to do about her rift with Jacqueline Blake, 37.

'There's probably no point of return with this one because we got in an argument and it was very nasty on the plane,' Mia said. 'It was very embarrassing. What I'm not okay with her thinking she can take jabs at me and I can't reciprocate.'

Mia said she would try to talk to Jacqueline and also suggested they plan a bachelorette party for Robyn. Gizelle said they should hire strippers and that Mia knew the best ones in town.

'It takes a stripper to know a stripper,' Mia said in a confessional.

Robyn called her assistant to see if she found a location for her private wedding in Jamaica.

Karen spoke to Ashley about Robyn personally attacking her at dinner and calling her fake.

'The way she did it, it was a venomous attack on me,' Karen said. 'You should be loyal to whomever in this friend group but you don't lynch me. Why go so left and attack my reputation, my, she called me fake.'

Karen said what she thought was actually fake was Robyn's wedding.

'You don't want your mother there, we can't be there,' Karen said. 'Mysteriously, last night it's in Jamaica with no witnesses.'

Karen said she knew a lot about Robyn.

'There is so much I know about Robyn Dixon, and she knows I know including Juan's other woman,' Karen said.

Karen said that the blonde woman lives in Montgomery County, that they always go on dates in Georgetown and that the woman looks like her. Ashley asked if she thought Robyn knew about it.

'She does know,' Karen said.

Karen said they should sit on it until they get back, but Ashley said that would be hard for her. Ashley then went over to Wendy and Candiace Dillard Bassett , 35, and told them that Karen had just told her something shocking about Robyn but that she couldn't tell them what she said.

'This girl lives to tell other people's business,' Candiace said in a confessional.

The women then took a group outing to go shopping in Tulum.

During the outing, someone suggested they should all get friendship bracelets.

'Don't we have to be friends for that?' Mia said.

Later at a group lunch, Robyn told Karen that she felt she was a very 'mean girl.' Karen said she was upset at Robyn for attaching her integrity.

'I am not mean spirited,' Karen said. 'I have known sh** for years and I have stood by you. But you take a dig every chance you get.'

Karen said she wasn't fake.

'What is fake is this wedding,' Karen said.

Karen said that she knew that Robyn knew about the rumors about the blonde girl in Georgetown.

'I've never heard of it in my life,' Robyn said.

'I've heard it,' Candiace said.

'It's your choice to do this cloak and dagger s*** with her wedding,' Karen said.

'I've been waiting for a wedding for seven years,' Karen said. 'You got engaged three years ago, and all of the sudden it's going to be off in the Caribbean with no witnesses.'

'So what?' Robyn said.

Robyn said she should care about how people were sending them actual pictures of her with a blue-eyed man in Washington Redskins gear in Las Vegas at a bar.

'That's what you should be worried about,' Robyn said.

Karen said she had no idea what she was talking about. Robyn showed everyone at the table the picture except for Karen.

'Somebody sent this picture to Gizelle about six months ago, and of course Gizelle instantly shared it with me,' Robyn said in a confessional.

'Your blonde woman is real and you know it, ' Karen said.

Karen also said that when Andy Cohen asked at the reunion if Robyn and Juan were open to a threesome that Robyn said yes. Robyn denied it. Karen said afterward when they went to dinner that Juan took her in his arms and 'squeezed me so tight my breasts went back to my vertebrae.'

'And he says to me, ''I want you to be the number three in the threesome'',' Karen said.

'I don't care,' Robyn said.

'The delusion continues,' Charisse said.

'So Juan wants to f*** you, Karen,' Gizelle said. 'Is that what you are trying to say? That's ridiculous.'

Karen said Juan did touch her inappropriately. Robyn said he just hugged her. Gizelle gave everyone shots and said she wanted to toast to 'receipts.'

'Because we have them on the phone,' Gizelle said.

Karen sighed.

'Come stronger,' Karen said. 'I ain't toasting to that s***.'

Gizelle then pointed out that Mia and Jacqueline were sitting next to each other but not speaking. Jacqueline said she wanted to talk it through with Mia.

'You are deep and ugly,' Jacqueline said.

Jaqueline started crying. Mia said she does this all the time and that her other friend group wants nothing to do with her because she was so dramatic.

Mia then turned to Wendy and to her that she wanted to like her and had a soft spot in her heart for her. 

Later that night, Wendy went to Mia's room to talk. Mia told her that she liked her but she felt that they kept missing each other and didn't know where they went wrong.

'You threw a drink on me, girl,' Wendy said.

Mia apologized. The two hugged and then went down to dinner.

Ashley said in a confessional that the final night they were in Mexico that they all had a fabulous time and were letting loose. After dinner, they went to the bar and did shots. Ashley said some of them started showing each other they weren't wearing panties.

'Mia comes beside me, she slithers, and she says, ''I just want to eat your box'',' Wendy said in a confessional.

The Real Housewives Of Potomac will return next Sunday on Bravo.