New Couple Alert!

Jamie-Lynn Sigler and New York Jets quarterback Mark Sanchez are an item.

“They met Monday night at the LG Infinia premiere of Keep Surfing for the Tribeca Film Festival and really hit it off,” claims a source. “They were flirting and talking all night.”

Sigler just split from Entourage costar Jerry Ferrara in December after a year of dating.

“Who knows where it will go, but it definitely looks like the start or something,” the insider continued.

A younger man! Loves it.

[Image via Getty Images.]