Janet Jackson and Jermaine Dupri Call It Quits?

Another day, another breakup rumor for Janet Jackson and Jermaine Dupri.

US Weekly reported this morning that the couple has split after almost seven years together because they are "polar opposites [who] were never too compatible." Jackson is shy and private, while Dupri is a gregarious charmer who loves to be out and about.

Buzz that the relationship had taken a recent dive began circulating after Dupri was a no-show at Michael Jackson's memorial service...

And I just learned that shortly before the King of Pop's death, Janet left the publicist she shared with Dupri for another high-powered mouthpiece.

However, two days before the Staples Center tribute, Dupri and Jackson were spotted together grabbing a bite to eat at a burger stand at the Malibu Country Mart. "They seemed like they were still together," an eyewitness says.

Reps for Jackson and Dupri are not commenting today. So, where are the two now?

Jackson is reportedly back at work reprising her role as Patricia in the sequel to Tyler Perry's 2007 comedy hit Why Did I Get Married? Her costar Malik Yoba blogged on Monday that she was back and "all seems well."

Dupri has been crisscrossing the country for DJ gigs. On Saturday night, he played Mixx nightclub at the Borgata Hotel Casino & Spa in Atlantic City. He dedicated one set to Michael.

And he did the same last night, but at the Bud Light Lime party at the Underground in Chicago. "He deejayed for two hours and drank Johnny Walker Blue all night," a source says. "He seemed to be in a really good mood."

Before launching into some hits by Janet's late brother, Dupri said, "I love you and I hear you Michael," according to a clubgoer.

As much as breakup talk has plagued the two, there have also been countless reports about an engagement.

"Most people don't get it right," Jackson told me in April 2008 when our talk turned to marriage. "Look at me! The thing is, I don't know if I ever will or won't get married again. I'm very happy where I am. I just think I jinx marriages, but that's not going to stop me from loving."