What's age got to do with it?!

Jennifer Lawrence certainly isn't hiding the age difference between her -- 26, and her director boyfriend Darren Aronofsky, 48. The pair are just low-key and not very public about their love lives. But JLaw stepped out with her man -- hidden behind her Chloe bag -- at Nobu Malibu this weekend, as the down-low lovers enjoyed some sushi on Saturday night.

Jen brought along a third wheel -- her pup Pippi Lawrence-Stocking ... we wonder how she kept him away from the sashimi and edamame!

The west coast vibe was a welcome break from a recently stressful time -- Lawrence was on a private plane, flying to New York, when the plane suffered engine failure and had to make an emergency landing. Fortunately the Hunger Games actress escaped uninjured.

But a little misadventure didn't stop Lawrence from participating in this really awesome celeb-studded video urging voters to call their senators after Republicans proposed their version of the American Health Care Act, which would de-fund of Planned Parenthood. Check it out ...