"Keeping Up With The Kardashians" star Khloe Kardashian and former basketball player Lamar Odom may have called it quits two years ago, but it seems that they have not really gotten over each other.

The former flame got in touch over a series of calls as revealed in the recent episodes of "Keeping Up With The Kardashians." In their Oct. 4 episode preview shared by Hollywood Life, it showed how giddy the KUTWK star was while talking to her former husband.

While Khloe and her sister Kim hung out in the kitchen, the 31-year-old Kardashian suddenly received a phone call from her ex-husband, answered it pronto, without any hesitations, and talked to the former "love of her life".

Khloe could not deny her bliss while talking to Lamar. All over the phone, she's trying hard to contain her happiness as she exchanges a little conversation with her ex.

Although big sister Kim has been casual with the exes' "friendship," the 34-year-old reality star does not seem to be very happy for her sister's dallying encounters with Lamar.

"Kim is staring at me, I have to go," Khloe said to Lamar as she notices that her big sister is not as amused as she is.

Khloe and Lamar has been in a tumultuous relationship for four years. Lamar's drug abuse has been one of the reasons that pushed Khloe to file a divorce. While the divorce case runs through the court, Khloe has been really devastated over the split despite having a fleeting relationship over another, one with rapper French Montana and currently with Houston Rockets star James Harden.

"As a big sister, I'm protective. For her to just be flirting with him on the phone makes me sick to my stomach," said Kim in front of the KUWTK cameras.

Kim said that Lamar has broken her little sister into pieces and she just cannot tolerate the fact that he has the guts to come back around, be friendly and Khloe just flirts with him anyway.

Khloe, however, defends herself from her big sister and shuts off the accusation that she's flirting yet again with his former love.

Also, in the earlier episode of KUTWK shared by Mirror UK, Khloe was seen to be talking again with Lamar, and, this time, she's not flirting. She's consoling her former husband after the death of his best friend Jamie Sangouthai last June.

"Lamar's best friend since he's been like 12, Jamie, just passed away unexpectedly. This is all just really upsetting. He's distraught and devastated," Khloe confessed to the KUTWK cameras. "Lamar has suffered so much loss in his life. I'm always going to be there for Lamar, especially when something as tragic as this happens."

Looks like despite the bad things that have happened, Khloe and Lamar's love for each other remains, even as friends.