Wife and I are in our early 30s, no kids, great sex life, great communication and dynamic between us. I swallowed the RP about 6 months ago and my wife responded to it immediately. Went from vanilla yet intimate/passionate sex to a more d/s dynamic, which she definitely is into. She started calling me 'Daddy' during sex and soon after it entered normal conversation and texts. I was a little put off at first because of the incest angle but she said she likes the term because she sees me as the man of the house, the future father of her choldren, the provider and leader, etc. Now, don't get me wrong, Im digging her enthusiasm and obvious adoration of me that is inherent in this dynamic but I can't help but have some concerns about how prevalent it has become. She does not ever do it in front of others (except to tease me when we get a moment alone) but the texts and solo convos are always overflowing with her calling me Daddy...

So is this a red flag or just her being enthusiastic and fully embracing her sub role in our relationship? Do I need to be worried or should I just keep rolling with it? I do find it sexy but also want to avoid any slippery slopes it could lead to. How should I proceed?