As the bond between reality star Khloe Kardashian and rapper French Montana appears to be heating up, his rumored fling of the past is reportedly receiving the cold shoulder.

Amid his move to L.A. to begin working on his new album, TMZ says sources speaking with the site revealed Montana's reported ex-sweetie Trina is furious that he’s abandoned their relationship. According to TMZ, the two were never officially an item, but they did live together in New Jersey before Montana took off to the West Coast to begin work on his next project. The sources added that Trina was upset when video leaked of Kardashian and Montana cozying up at a party in late March, and that she hasn’t spoken to him for several weeks now. A source told Life & Style that the rumored couple has been dating for a month now, and that when Kardashian joined him on set during a music-video taping, Montana was unable to focus because Kardashian “was kissing his neck and hanging on him.” But Montana’s estranged wife, Deen Kharbouch, issued a warning to Kardashian as talk of the pair’s possible romance continues to grow.

“She has to be careful. Things are not what they seem,” she told Life & Style. She added that once his career took off in 2012, the rapper “practically abandoned” her and their 4-year-old son Kruz. “As soon as he popped, it was as if Kruz and I didn’t exist,” she said. Montana and Kharbouch were married in 2007.