Kim Kardashian is not too happy that her younger sister Khloe Kardashian is dating French Montana. 

According to reports, Kim is upset at Khloe for her relationship with Montana, because he used to date rapper Trina. The rapper and Montana were dating days before he stepped out publicly with Khloe, but Kim wants to get the peace because she is friends with Trina. 

"Kim and Trina are good friends ... Khloe and Trina were friends, and Kim is very upset over all of this," a source told The New York Daily News. 

Khloe and Montana have been spending more time together, as they were photographed in New York over the weekend and stayed at the Trump Soho hotel. On Saturday, they ate lunch at City Lobster in the Bronx, and hit up the All Star night club in Elizabeth, N.J.

"They got there around 12:30," a source said. 

Meanwhile, Montana's estranged wife Deen Kharbouch told Life & Style magazine that Kardashian should be careful. 

As soon as he popped, it was as if Kruz and I didn't exist," Kharbouch said. "He practically abandoned us."

"Sometimes we won't hear from him for two or three months," she added.

Montana is currently paying $7,000 a month in child support as the former couple goes through their divorce, but his payments are only because Kharbouch forced him to go to court.