THE FOSTERS - "The Long Haul" - Stef's mom Sharon and her boyfriend Will announce their engagement, on all-new episode of "The Fosters," airing TUESDAY, MARCH 14 (8:00 - 9:01 p.m. EDT), on Freeform. (Mitch Haaseth/Freeform via Getty Images) ROB MORROW, ANNIE POTTS