Could their romance already be over?

Kourtney Kardashian's 20-year-old boy toy Luka Sabbat grabbed dinner with a mystery girl at Nobu in Malibu last night, and it certainly looked like a date!

Apparently, the model and the reality star are enjoying each other's company, but it's not quite as intense as everyone thinks.

“It’s nothing serious right now. It makes her feel good to have these hot, young guys who are interested in her," a source dished to People.

"Luka is also good friends with Kendall. He’s young and is going with the flow. If everyone’s saying, ‘Hang out with Kourtney,’ he’s going to hang out with her," the source added.

Still, her friends and family are just glad she's not with ex Younes Bendjima anymore.

"None of her friends liked Younes, and they all love Luka even though he’s only 20! They think he’s good for her, and he’s a very down to earth and good guy," the insider revealed.

Kourt might want to keep an eye on her man!