The Shadowhunters star opened up to ET's Leanne Aguilera at Comic-Con 2017 in San Diego, California, on Thursday about his Modern Family star girlfriend's recent response to being criticized online for being too skinny.
"[I'm] incredibly proud," the 27-year-old actor gushed. "As the public knows, Sarah's going through quite a bit at the moment. For anyone to be small-minded enough to try and close her into a space that they don't understand is ridiculous."
"The way she deals with it is incredible," Sherwood added.
Meanwhile, Hyland and Sherwood are going from just being a couple to co-stars, as the 26-year-old actress is joining the Freeform show's cast. Sherwood shared that having his gal around at work was great.