Johnny Galecki and Kelli Garner Break Up

Big Bang Theory star and Pan Am actress began dating in 2012

It's over! Johnny Galecki and Kelli Garner have broken up, E! News confirms.

The Big Bang Theory actor, 39, and the Pan Am actress, 30, took their romance public in March 2012, and the exes have staying amicable post-split. "It's all good," a source insists. "They still hang out a lot."

Staying friends with exes seemingly comes easy for Galecki. He brought Garner to his ex-girlfriend and co-star Kaley Cuoco-Sweeting's wedding to tennis player Ryan Sweeting on New Year's Eve in 2013.

Galecki flew solo at Monday's Emmys. Co-star Jim Parsons was named Outstanding Lead Actor in a Comedy Series, while co-star Mayim Bialik lost the Outstanding Supporting Actress in a Comedy Series award to Mom's Allison Janney. The Big Bang Theory lost Outstanding Comedy Series to Modern Family.

Earlier this month, Cuoco-Sweeting, Galecki and Parsons renegotiated their Big Bang Theory contracts. The actors will each earn a reported $1 million per episode. The eighth season returns to CBS on Sept. 22 at 8 p.m.

Us Weekly was the first to report the couple's breakup.

—Reporting by Marc Malkin