The show's pilot aired in 2011. Dallas and Goodwin started dating in 2011. So, I bet they started dating near the end of season one's production. They got married three years later and he posts about her like she's the only woman in this universe. I feel like they're the real Prince Charming and Snow White. If they get a divorce, then I'll have no reason to believe in love. The way he talks about her in interviews and the way she talks about him. They are utterly infatuated with each other from what I see