X17 XCLUSIVE - NEW COUPLE ALERT! CAMERON DIAZ AND ADAM LEVINE!!!

X17 photogs spotted perpetually single Cameron Diaz meeting up with Maroon 5 lead singer Adam Levine yesterday at the Chateau Marmont garden restaurant for what appeared to be a DATE!!!

The pair arrived separately around 1 pm and stayed for just over an hour. An X17 photographer tells X17online:

"They looked really excited to be together. It didn't seem like the first time they met - they were comfortable with each other. Cameron was laughing at all of Adam's jokes and they seemed like such a perfect match. They were even dressed alike!"

The pair left in good spirits and headed their separate ways but we have a feeling this won't be the last time they hook up!

NOTE: Jessica Simpson dated Adam way back when AND JSimp dated John Mayer, who also dated Cameron. Talk about six degrees!