I Cheated With My Best Friend's Crush While Engaged, Was It Wrong?

So, my partner and I have been together for over five years now. We’re both in our early thirties and recently got engaged. But here’s the twist: I cheated on him with his best friend's crush during a business trip last month. Yes, you heard me right. Now before anyone says anything about not respecting boundaries, let me explain why it happened. See, my partner has this thing where he gets really into controlling all aspects of our relationship, even what clothes I wear and who I talk to at parties. It’s suffocating, honestly. And while we’re both grown-ups and know there’s no physical contact involved, this best friend of his is the opposite, open, playful, and always making jokes about wanting to get together with me. So, imagine my surprise when he invited me out for drinks one night during a business trip. His place was close by too; it turns out he's staying in the same hotel. We were alone in this swanky bar, and there we were, talking and laughing until late into the night. He made some offhand comment about us being meant to be together, something my partner would have never said. The next day, we went back to his place for a quick drink before catching our flights home. That's when things got heated. We started touching and kissing, but then it escalated fast. I ended up in his bed with him, fully knowing what was happening wasn’t right, yet unable to stop myself from wanting this freedom. The sex itself... well, it was unlike anything I’ve ever experienced before. His touch felt wild and untamed; every thrust was aggressive and passionate, leaving me breathless and craving more. There was no gentle coaxing or slow build-up, just pure animalistic desire between us. He dominated me in ways my partner never has, making me question everything I thought I knew about myself. But here’s the thing: even as I’m asking if this was wrong, part of me still thinks maybe it wasn’t. Maybe there’s more out there for both of us than we ever imagined while living under my fiancé's strict control. What do you think? Am I really such an asshole?