90 Day Fiancé’s Kara Declares Guillermo Relationship Is ‘Not Working’ (Exclusive)

ET has your unique first have a look at ’90 Day Fiancé: Happily Ever After?,’ which finds Kara and Guillermo at odds, as he calls her out for late nights spent with a man/membership prompter, with whom she has a previous. Kara says Guillermo has nothing to fret about, however his lack of belief is making a crack they may not have the ability to mend. See how this works out for the couple as new episodes air Sundays at 8 p.m. ET/PT on TLC.