'90 Day: The Single Life's Josh and Natalie Argue Over the State of Their Relationship (Exclusive)

In ET's exclusive clip from ‘90 Day: The Single Life,' Josh and Natalie argue over the state of their relationship. Josh refusing to call Natalie his girlfriend does not sit well with the other ‘90 Day’ couples, and Natalie can't stand to look him in the eye. ‘90 Day: The Single Life' airs Sundays at 8 p.m. ET/PT on TLC.