Maks Chmerkovskiy and Vanessa Lachey Are Back in the DWTS Studio After Chemistry Controversy

Maksim Chmerkovskiy and Vanessa Lachey were back in the rehearsal studio on Wednesday after Chmerkovskiy missed this week’s episode of Dancing with the Stars.

Co-host Erin Andrews informed viewers Monday that Chmerkovskiy’s absence was due to “a personal issue,” but sources told PEOPLE that the DWTS pro, 37, and Lachey, 36, have been “bickering” since the beginning of the competition and he chose to sit out from rehearsals and the live show due to a clash between their “big personalities.”

Lindsay Arnold
Lindsay Arnold

“Honestly, they’re awesome, I love them. Nick and Vanessa are awesome so are Peta and Maks. They’re such a fun partnership,” said Sasha Pieterse, who is currently competing on the ABC dancing competition with pro Gleb Savchenko.

“I don’t know what’s going on but all I know is that he had a personal issue, a family issue. Alan was great and now [Maks and Vanessa] are reunited,” the Pretty Little Liars alum, 21, added.

Sasha Pieterse
Sasha Pieterse

Chmerkovskiy took to Twitter Wednesday to apologize to Lachey for his absence, which left his partner to perform with first-time pro Alan Bersten.

“As you are all aware, I had to leave the show last week to take care of some personal issues. I take full responsibility for my absence. And want to apologize to my partner Vanessa. We are both looking forward to dancing for our fans next week!” the father of one wrote.

Jordan Fisher
Jordan Fisher

The dances for week 4 will commemorate the celebrity contestants’ most memorable year.

“I think we all are genuinely excited about this next week,” said Arnold, who was accompanied by partner Jordan Fisher.

“It’s huge and every celebrity is opening up about personal things that are in each of their lives. The vibe is awesome,” Arnold concluded.

Dancing with the Stars airs Mondays (8 p.m. ET) on ABC.