I'm sort of new/sort of not to BDSM. I've recently met and hooked up with a new girl. I knew ahead of time that she was at least curious about bondage and spanking. (I paid attention to things she said.) We've been playing and everything is going fine. She loves being spanked and also loves being tied up and helpless while I play. This is really about as far as I've ever got with any other playmates/SOs. Is there anything that people would consider a natural progression from this? She seems pretty game to try anything, but I'm kind of lost as to where to go. Any help?