FYI, I did not tell my new bride about my fly fishing addictions until AFTER we were married 25 years ago. Then took her with me the first summer we were married up to the hallowed holy waters of the NY Catskills Beaverkill & Willowemuc, etc.
She went and sat on the rocks sun bathing in the bikini until the water snake went swimming buy her sunning rock. As I remember I had a good day with the browns and the wife only went with me a few times after that. Knowing that when I was was going fishing, I was really going fishing and their was nothing to worry about me pursuing other prurient interests. Everything has been fine for the last 25 years.