For Valentine's Day, Hallmark asked me to share a very personal story on Instagram.

Erin and I have been together for 18 years. We were just kids when we started dating – I was 19 and she was 18 – so we’ve grown up together and we’ve been through everything together: new schools, new homes, new cities, new jobs, new careers. I love Erin because she’s stuck with me through all of the changes in our lives; because she challenges me when I need to be challenged; because she pushes me to be a better person, a better father, and a better photographer (I trust her to give me honest critiques of my work more than anyone); and because she’s the best mother my kids could ever hope to have. I love Erin because she’s my best friend and the one person I want to wake up next to every day for the rest of my life.