It seemed to me that the poster was asking how to "introduce" the subject into the relationship. Maybe I'm wrong. Anyway, I liked it because it reminds me of how I got into it. I'm over two years into the best relationship I've ever had and DEFINATELY the best sex I've ever had. My g/f actually introduced the subject. We had just finished having sex one day in the beginning and she made a simple observation..."Too bad you don't have a headboard." I said "Why?" and she answered..."Because you don't have anything to tie me too."
I'm so glad she made that comment because, in spite of my interest, I would never have brought it up for fear of being thought of as a pervert by her.
In any event, I had the big I-bolts drilled into the walls next to the beed the next day and it's been an adventure ever since. We just recently bought a house together and within the first week she asked me to install the I-bolts in our new bedroom
I say...GO FOR IT!