Jamie-Lynn Sigler’s New Man: Mark Sanchez!

She split from her “Entourage” costar Jerry Ferrara last December and now Jamie-Lynn Sigler has found love with someone new.

The “Sopranos” babe is dating New York Jets quarterback Mark Sanchez, who is 5 years her junior.

According to an inside source, the new couple has only been together for a few days, but things are looking good so far.

"They met Monday night at the LG Infinia premiere of Keep Surfing for the Tribeca Film Festival and really hit it off. They were flirting and talking all night. Who knows where it will go, but it definitely looks like the start or something.”