Chris Brown is ripping longtime rival Drake for seemingly always chasing after his exes.

According to Hollywood Life, Brown's assertions come after the "Started From The Bottom" rapper was recently spied "chatting up" the "Loyal" singer's ex Karrueche Tran while at a Los Angeles nightspot. Drake was previously romantically linked to Rihanna, another of Brown's sultry ex-paramours.

"Chris is glad he's able to be of service to Drake yet again," a source said. "Drake's always quick to throw Chris' name around in his music. And Drake's always quick to go behind Chris and pick up his exes."

This trend has become so common, a source claims the 26-year-old Brown has now almost come to expect it and views it as another indication of Drake's envy.

"The sex between Chris and his exes, like Karrueche and Rihanna, has been downright hot," a source added. "Drake can still smell Chris' scent on Kae and Chris knows that's why Drake will be forever envious of him."

Before being spotted with Tran, Drake had been linked to tennis champion Serena Williams, and some media outlets reported the two had become so close they might be on the verge of getting engaged. But more recently, the romance seems to have cooled quite a bit, with Drake even attending at an LA hotspot with a Serena look-a-like as his date.

Reports are the rap star and Instagram model Ravie Loso recently arrived in a limo at The Nice Guy in Hollywood, where they spent the rest of the evening hanging out and cavorting.

Not long before then, Drake and Williams seemed almost inseparable, with the rapper appearing front and center at all her tennis matches. The two were also seen hanging out together on several romantic, late-night dinners, where they were openly affectionate.