Charlie Day, Jenny Slate to Star in Rom-Com 'I Want You Back' - TheWrap

Photo: Charlie Day and Mary Elizabeth Ellis attend the Lego Movie 2 premiere in Los Angeles - LAP2019020244

Charlie Day (L) and his wife Mary Elizabeth Ellis attend the premiere of 'Hotel Artemis' at the Regency Bruin Theatre in Los Angeles, California on May 19, 2018. Photo by Chris Chew/UPI

Celebrities Who Guest-Starred on Their Partner's TV Show

Photos and Pictures - Charlie Day of It's Always Sunny in Philadelphia and wife Mary Elizabeth Ellis are all smiles as they arrive at Hotel Solamar for the EW and SyFy celebration

Charlie Day Charlie day, Horrible people, It's always sunny in philadelphia

Meet Charlie Day's Stunning Wife — He Won the Chance to Talk to Her by Arm-Wrestling a Friend

It's Always Sunny's Charlie Day and Mary Elizabeth Ellis Are Expecting

Charlie Day & Mary Elizabeth Ellis Editorial Photography - Image of husband, popular: 175777377

Charlie Day, Mary Elizabeth Ellis – Stock Editorial Photo © s_bukley #62701589

Charlie Day & Kaitlin Olson's Awkward Love Scene