Ross Matthews and husband Wellinthon García-Mathews celebrated their anniversary Caribbean-style this year. “We marked four years on May 7 [and] we were like, ‘What should we do? What should we do?’ And then this opportunity came up, and we were like, ‘What better way to celebrate than going somewhere tropical that feels like it’s full of love?’ and that’s what it’s been,” Matthews, 46, reveals exclusively of their getaway to Beaches Turks & Cai…