Jamie-Lynn Sigler and Mark Sanchez: Dating!

New couple alert: Jamie-Lynn Sigler is dating Mark Sanchez!

"They met Monday night at the LG Infinia premiere of Keep Surfing for the Tribeca Film Festival and really hit it off," a source revealed to Us Weekly.

"They were flirting and talking all night. Who knows where it will go, but it definitely looks like the start or something," adds the insider of the pair.

Before linking up with the N.Y. Jets quarterback, Sigler split from her Entourage costar beau Jerry Ferrara last December after over a year of dating.

Mark Sanchez was most recently linked to The Hills star Kristin Cavallari, whom he partied with (hard, apparently) at the Super Bowl in January.

Do you think Jamie-Lynn Sigler and Mark Sanchez make a cute couple?