Caught in a Moment of Weakness

I’ve been in a committed relationship for over two years now, but there’s this one thing I’ve struggled with that I’m really ashamed to admit. It happened just last week during our anniversary trip. We were both drinking at a beachfront bar and suddenly, I found myself staring at another man across the room. I know it sounds ridiculous, given how much I love my partner, but there was something about him, his confidence and the way he moved, that made me feel... intrigued. It wasn’t until we got back to our hotel room that I felt this overwhelming urge to explore a fantasy I’ve never shared with anyone. As I turned to look at my sleeping partner, an impulse hit me so strongly that I couldn’t resist touching myself right there beside him. The sensations were intense, my body was craving something different and new. I want to be honest: the moment was fleeting but incredibly vivid. It involved imagining what it would be like to explore this side of me with someone else, which felt both terrifying and thrilling. I know my partner trusts me completely, and that makes me feel even more guilty for having these thoughts while in such a committed relationship. Is this just normal human curiosity? Or is there something seriously wrong with me? What should I do to reconcile this part of myself without jeopardizing what we have?