Viewers last saw Russell, who was the father of one of Jess' students, in season one's "Tomatoes" when Jess ended their relationship because she wanted more passion. So how will Russell return? All we can share is that Jess runs into her former boyfriend at a most inopportune time.

Of course, a lot has changed since Jess' split with Russell: Jess and Nick (Jake Johnson), who harbored a major man crush on the successful and sophisticated Russell, have (finally) kissed and are now dancing around the possibility of a relationship, so of course, Russell's return factors into that storyline. But we refuse to say any more than that!

New Girl returns Tuesday, March 12 on Fox.