Lea Michele and Jonathan Groff

Lea Michele and Jonathan Groff are spotted on the set of Glee in Los Angeles yesterday. Lea tweeted the picture and wrote: "Look who's baaack... "

Of course Lea's character Rachel Berry and Jonathan's character Jesse St. James dated in the first season during his secret undercover mission for Rachel's biological mother, "Vocal Adrenaline" coach Shelby Corcoran.

******SPOILER ALERT******

Michael Ausiello of TVLine has more about Groff's return to the show:

Sources confirm to me exclusively that the fan favorite has closed a deal to return for this season's final three episodes. "He's back to apologize to Rachel," confides a source close to the show, "and perhaps get her back."