Lamar Odom is not over his relationship with Khloe Kardashian just yet and he reportedly has been calling her constantly. Unfortunately for the former NBA star, Kardashian has no interest in talking to him.

RadarOnline reports the reality star has “been refusing to take his calls lately,” and that Odom has been “blowing up her phone” with “desperate calls.” Kardashian’s budding romance with rapper French Montana may be to blame. “Khloe is out in public with new guys all over them and it is killing Lamar,” the source tells Radar. “Yeah, he was totally with other women [first], but he doesn’t want Khloe to shove it in his face that she is moving on. Lamar is jealous and gets mad when she refuses to talk to him,” a source continued.

Kardashian and French Montana have allegedly been dating for a month now, and a video leaked this week of Kardashian cuddling with him while he was in a recording studio.

In December, Kardashian, 29, filed for divorce from NBA player Lamar Odom. The two married four years ago after a 30-day courtship. In November, in a bizarre rap video while drunk, Odom admitted to cheating on Kardashian. In August, he was arrested on charges of driving under the influence. 

But if Kardashian and Montana are officially dating, his estranged wife, Deen Kharbouch, has words of advice for her. “She has to be careful. Things are not what they seem,” she told Life & Style. Last September, she charged via Twitter that Montana left her and their 4-year-old son once he attained fame. The couple had been together seven years and married for six.