In a Kourtney And Khloe Take The Hamptons episode, Khloe straight out told Kris Jenner that if it were up to her, she would still be married to Lamar - and she hasn't really changed her tone very much since.
In an interview with E! News in April, she said she will never NOT love her ex. "He was my husband, and I still wish he was, and, you know, I don't think there's anything wrong with that, but there's nothing I can do. Lamar has to do things in order to change that aspect," she explained. "Yeah, if I had my way, I'd be married to Lamar in two seconds."
As we see in this Keeping Up With The Kardashians sneak peek, it looks like Lamar still holds a place in Khloe's heart and protective older sister Kim Kardashian is not happy about it. "As a big sister, I'm just really protective and for her just to be flirting with him on the phone makes me sick to my stomach," Kim tells the camera.
When Khloe hangs up with Lamar, Kim confronts Khloe about it, saying that she "just can't take it," but Khloe doesn't really care.
Khloe and Lamar did just finalize their divorce in July - maybe they're having second thoughts?