Discovering Myself in the Shadows

I've been married for about five years now...to a wonderful man who I love deeply. He's everything anyone could want in a partner, kind, supportive, and loving...but lately, I've felt this void within me...something that just doesn't fit...until recently, it was something I couldn't even put words to. It started subtly at first...a curiosity about role-play scenes with strict masters...then I began exploring online communities dedicated to BDSM practices. It wasn't until a few weeks ago when I stumbled upon a post discussing the dynamics of Dominant and Little...or Daddies and Littles in a consensual context. And that's when everything changed... I found myself, for the first time, truly feeling something as real as my marriage...but this was different. It wasn't about physical intimacy or traditional power exchange. I craved guidance, protection...the sense of being cared for by someone who saw me as their precious little girl...even though in every other aspect of life, I'm a grown woman in her 30s. When I opened up to my husband about this newfound exploration, his response was understanding and supportive. He suggested we try it out in the context of our relationship, playing with different dynamics that both of us feel comfortable with...but there's still something missing when he's the one taking on the role. Maybe it's just me being picky...or maybe I haven't found my true Daddy yet... I've been hesitant to explore further for fear of hurting him or feeling like a cheat in some way...but this yearning feels too strong to ignore. Am I the asshole here? Is seeking fulfillment from someone else outside our relationship justified when there's no physical infidelity involved? Does anyone have any advice on how to proceed...or is it just me overthinking everything and I should embrace my desires more openly within our existing dynamic? ...