After insisting they’re “just good friends,” Jets star Mark Sanchez was spotted celebrating Jamie-Lynn Sigler‘s birthday at Abe & Arthur’s on West 14th Street on Saturday night. The pair, who spies said “definitely looked more than friends,” shared a dinner with Yankees star Nick Swisher and his actress girlfriend, Joanna Garcia, as well as new “Chelsea It-Couple” Lance Bass and “Queer Eye” star Kyan Douglas before moving downstairs to club S.L., where they all toasted Jamie-Lynn with cake.