Despite changing her name back to Kardashian on twitter, and reportedly threatening the basketballer with a divorce last month, it appears the 29-year-old has done a full 360.
The pair were spotted at Kanye West's Yeezus concert on Monday, although he has reportedly not yet been let back into the $4million mansion they share.
'Lamar broke down and apologised deeply to her'
This is said to be the first official step towards their reunion since the scandal broke two months ago.
A source close to the pair told a US a magazine:
'Lamar broke down and apologised deeply to her.
'He got clean and that's why she started talking to him again. She was willing to give him a second chance.'
34-year-old Lamar, who is in talks with the LA Lakers to get back onto the team, is said to have first visited matriarch of the family, Kris Jenner.
'Lamar was super emotional,' says the magazine's source. '
He told Kris he never meant to hurt them or their daughter. He said disappointing them was the biggest mistake of his life.'
'She never wanted to leave him but felt she had to.
'Especially because her family was against her staying while he was on a bender.'
Despite the reality star's move to reunite with her husband, reports say it will take her longer to get over the affair claims.
'Khloe's not past his affairs,' adds the insider.
'This is what Khloe is mainly embarrassed about. She hates the drugs, but the cheating and the lying are harder.'
'She doesn't want backlash because she forgave an addict and a cheater.'
The couple are expected to announce their reunion before the end of the year.