Blake Lively & Penn Badgley Hug It Out

11/1/2010 3:15 PM PDT
Blake Lively and Penn Badgley know breaking up is hard to do ... when you work together.

For the first time since news broke of their breakup, the former couple was spotted smiling and embracing on the NYC set of "Gossip Girl" today.

XOXO ... but only on-camera.