Many years ago, well before the net let us know that we weren't weirdo's but practising a healthy lifestyle, it was extremely difficult (for me anyways) to bring up my interests in this area.

I was astounded with one new g/f of about 3 months when I suggested a bit of bedroom bondage she not only quickly accepted, but told me that when she is helpless she should be fisted. Our D/s relationship quickly sorted itself out