Aly Michalka & Joel David Moore Among Hollywood’s Most Random Couples (PHOTOS)

Is she really going out with him?

In what could be one of the most random celeb couples out there today, singer Aly Michalka and Grandma’s Boy star Joel David Moore were spotted holding hands while grabbing lunch in Calabasas this week. We think they’re adorable, but seriously, how did these two even meet?!

They’re not the only duo who have people scratching their heads.

From couples such as House’s Amber Tamblyn and Arrested Development star David Cross (the two have a 19-year-age difference) as well as Matthew Perry and Mean Girl’s actress Lizzy Caplan, take a look at our round up of random celeb lovebirds.

And although some have since broken up (like Christina Aguilera and her ex-hubby Jordan Bratman) take a gander through the gallery and let us know on Twitter or Facebook — which do you think is the MOST random?