Big Bang Theory star Johnny Galecki and his girlfriend, Kelli Garner, have called it quits. The couple dated for over two years.

The split is said to be extremely amicable and there’s no bad blood between them.

"Johnny and Kelli are still best friends,” a source told Us Weekly.

Galecki, who dated his co-star Kaley Cuoco-Sweeting in the past, attended the Emmys on Monday where Jim Parsons took home the award for lead actor in a comedy.

Galecki and Garner, also an actor, both attended Cuoco’s wedding to Ryan Sweeting in January.

In November 2013, Galecki opened up about their relationship, saying "We're dear friends, still. Kaley's not just an ex, she's a part of my life... I just don't like to speak about it. And not because I'm trying to be enigmatic; I just worry that it will conflict with people's acceptance of (our characters) Leonard and Penny. I get the curiosity, but I don't want to distract from the story."

image via Nancy Rivera/ACE/INFphoto.com