Arnold Schwarzenegger grabbed Maria Shriver's butt last weekend flirtatiously, which may be evidence that they're back together.

Schwarzenegger and Shriver have been breaking up and divorcing and together again and happily in love, depending on which publication you read. But the butt grab seems like flirtatious evidence of a couple who's definitely not splitting - and might even mean rekindling a relationship.

Arnold and Maria were at a graduation in Georgetown during the butt grab. Their dauther Christina was graduating and, in the middle of a busy crowd, Arnold casually cupped Maria's buttocks with his hand. It might be definitive proof that they're being frisky in the sack.

Schwarzenegger and Shriver have been slow on finalizing their divorce since 2011, the year Maria found out Arnold was cheating with their maid. Maybe she's forgiven him? Still, there's been scandal after scandal, and the two have badmouthed each other to insiders repeatedly.

Shwarzenegger's girlfriend Heather Milligan, who he kept secret, probably won't be happy about Arnie's butt cup.

Arnold Schwarzenegger and Maria Shriver have been working on getting a divorce and dragging their feet about it, but he's always loved her butt. He recently told a story about how he even told Maria's mom her daughter had a "great ass". 

Schwarzenegger and Maria Shriver might be back together - or at least want to reconcile. They also spent Easter together and were caught kissing on the lips. The butt grab, though, takes it to a whole other level.