David Arquette And New Girlfriend Picnic With Coco

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It must be serious! David Arquette introduced his new girlfriend Christina McLarty to daughter Coco months ago and the trio already looks like a family!

The group lunched at a Malibu park Saturday and our photographer tells us: "They all looked so relaxed and happy. Coco seems to have really taken to Christina. The two girls were lunching and playing around together. The seem like good friends."

Arquette and McLarty were first spotted together at Comic Con in San Diego in late July and David told Howard Stern during a radio interview in late September, McLarty is "adorable." According to Arquette, the two met at a "boat party."

Arquette has been separated from wife Courteney Cox for just over a year, though neither has yet filed for divorce. Still, if things continue to be serious with McLarty, perhaps David will want to make the break with Cox official. McLarty ended her marriage to Girls Gone Wild founder Joe Francis in 2010, after only two months with the notorious bad boy. Maybe she's ready to settle down with someone a little more stable now?