Cameron Diaz and Alex Rodriguez Haven’t Split

 Elder Ordonez/INFphoto.com

Cam and A-Rod: So totally not over.

Although several outlets have claimed that Cameron Diaz and Alex Rodriguez recently ended their on-off relationship, the duo held court together at Sunday night's MTV Movie Awards afterparty at L.A.'s SoHo House.

At a bash attended by the likes of Robert Pattinson, Kristen Stewart, Jennifer Aniston and other A-listers, the actress, 38, and Rodriguez, 35, entered the VIP party hand-in-hand and were "very affectionate," according to one witness. Although they chatted and mingled with pals, the couple were inseparable throughout the night — holding hands and stealing several kisses, the witness added.

The couple (who went public with their romance in late 2010) actually had a more private night at SoHo House just one night before, and were spotted exiting the members-only club; the Yankees slugger had his hand on Diaz's famous bottom, and her fingers were laced into his jeans.

Another L.A. denizen spotted the twosome on Thursday — checking out the NBA finals at sports bar Goals. "They were definitely a couple," the Goals witness tells Us.

Indeed, one insider scoffed at last week's split reports, telling Us: "This is 100 percent speculation." Rodriguez is in L.A. for the Yankeess' upcoming game versus the Angels. His rep had no comment about the breakup rumor.

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