I Broke Up With Him Over This Silly Kink, Is It Too Much?

Hey everyone, I know it sounds crazy to say this out loud, but here goes. So, there’s this thing with my current boyfriend that just hit me like a ton of bricks one day when we were at his place for the weekend. We had been dating casually since September, and I thought things were going well. But then he brought up this kink during foreplay, bondage using silk ties as restraints. And yeah, I didn’t know how to react. It’s not that I’m against it; honestly, my body responded to him in a way I hadn't expected. He was gentle and careful, making sure I felt safe and comfortable throughout. But the more we did it, the more this insecurity started gnawing at me, am I really into something so specific and intense? When he suggested we try it again last week, I freaked out and broke things off. Not because of his kink itself, but because the idea made my stomach turn. Now I’m second-guessing everything. Was breaking up too extreme a reaction to this one thing that’s just different from what I’m used to? Am I being overly sensitive here? Should I have at least tried to understand it better before jumping ship? Your thoughts would be so appreciated.