Amber Rose is lashing out at Khloe Kardashian over her rumored romance with one of her former flames, NBA all-star James Harden.

Hollywood Life reports the 31-year-old Rose is now "totally convinced Kardashian and her sisters wait around for her and friends to break up with men," so they can snare them on the rebound. Rose previously dated Kanye West, who is now married to Khloe's older sister Kim Kardashian.

"She seriously believes these women sit around and take notes on who she's dating, and once she's done, they swarm like the flies they are and go to town on the leftover carcass," a source said. "Those Kardashians are seriously some thirsty girls. Amber wouldn't even be surprised if one of them tried to get too close to Wiz Khalifa."

In addition to Rose's own men, Kylie Jenner is also dating Tyga, who was previously with and has a child by one of Amber's best friends, Blac Chyna. The coincidences have left Rose and her crew convinced there's very little real about the Kardashian/Jenner women.

"They enjoy Amber's sloppy seconds," the source added. "Even the young one is taking part of the family's tradition of bottom feeding by dating Tyga. It's just pitiful."

Just four months after TMZ reported Rose and Harden were seen together in New York City during NBA All-Star weekend, Khloe was spotted with him in Las Vegas on the Independence Day holiday weekend. Reports are Lamar Odom's estranged wife and the Houston Rockets star weren't shy about flaunting their newfound romance.

"They were all over each other," a source said. "They walked in holding hands. They were laughing and whispering into each other's ears. They looked really happy. They were definitely more interested in each other's company than eating. He was caressing her back and she was smiling."

The two later attended a pool party at Encore Beach Club and were spotted snuggling up to one another in a cabana.