jaclyn pfeiffer , 29 , worked at the aloma methodist early childhood learning center in orange county , florida , full-time for about 18 months .
she started dating kelly bardier , 33 , in october .
bardier recently started part-time at the daycare .
both were fired when staff learned of their relationship .
they say they were unaware of the center 's stance against homosexuals .
have asked for their jobs back by april 15 , or will sue for discrimination .