Just recently discovered the BDSM type stuff with a new girlfriend. Nothing big really, just some bondage, but found that feeling vulnerable can be a turn on. She's found a few of my week points and we've been exploring that. Like when she found out that I feel vulnerable and exposed without socks, she started making me go barefoot. And then we got into tying each other up. Here recently she found something else to exploit. I tripped on throw rug in her living room one night when we were messing around. My glasses were knocked off and landed...somewhere. I'm more or less blind without them. Just a blur of shapeless colors. When this happens I don't just feel vulnerable, I feel helpless. Being so dependent on my glasses, losing them is a very, very scary. Unable to see where they landed, I start crawling around, feeling for them with my hands. At which point she says "Oh, I was wondering how much you can see without your glasses." When my hand finally brushes against them, she knocked them away. Now had that happened with anyone but her, I would have freaked. But I didn't. Even being tied up I had never felt so helpless and at her mercy. Not to mention much more intimate. I never thought I could get turned on by something I had been afraid of. Kind of like a blind fold that I couldn't take off. Don't know if others have gotten into something like that with their g/f or b/f.