They spend more time with the kiddos than Kourtney does these days!

Scott Disick and Sofia Richie took his three children to dinner at Nobu in Malibu last night, and if you didn't know better, you'd think they were just one big happy family!

When The Lord and his teen lady love first started dating, his baby mama didn't want her around their kids, but it seems she's relaxed the rules as their relationship has gotten serious.

The grown-up romance has the model's family worried, though!

A source tells X17:
    "Both her dad Lionel and sister Nicole think she should be taking this time to be young and work on building her career. They don't think she should be spending her days parenting someone else's kids. They worry that she has totally given up her routine and her life to live his. They want her to form her own identity, because they don't think this relationship will last forever, and they want her to have something left of her own when it crumbles."

We still can't believe they've lasted this long! LD used to be such a womanizer, but Sofia has turned him into a model boyfriend... at least for the time being!