Marc Malkin

High rollers Jessica Simpson and her football hunk boyfriend, Tony Romo, were spotted in Las Vegas Friday night.

Romo had already been in Sin City for fellow pro football player Marco Rivera’s retirement party when Simpson arrived Friday afternoon by private jet.

The lovebirds are said to have stayed in the Hard Rock Hotel’s King Penthouse Suite and bowled a few rounds in the suite’s private lanes before joining a group of about 25 for a family-style Italian dinner downstairs at Ago restaurant.

Of course, they got some gamblin’ in, too. After din-din, they played blackjack in the VIP invite-only Peacock Lounge, where they were joined by more NFL players, including Bobby Carpenter, Jason Witten, Anthony Fasano and Keenan McCardell.

Simpson and Romo then called it a night at about 2 a.m., even as most of the others in their group headed to Body English nightclub. Guess they had more important stuff to do.