To many people,
devotion is more than just being true to someone.
Real devotion is what the bdsm set strive for! To devote all your thoughts, actions, pleasures to someone is the truest act of a submissive (sub). Not only is the desire to please strong, but the desire to be
forced to please - forced to do things, be someone they might not be if left to their own devices... this is the pleasure of a sub. And all for the sake of their dom.
There are a few things to take into consideration to make this relationship work, however. A few of them are outlined here, as well as some links to pics of his sub, and some other resources for a dom/sub mindset.
There are several good places on the 'net to explore the bdsm world, if you think you might like it. I have removed my recommendation for alt.com as they have made too many changes and are no longer easy or effective to use. In fact, some of the stuff just no longer works! Too bad. They used to be a good site. But a search of the net should reveal many other places, and at least one is sure to fit your tastes.
Have fun, and remember the bdsm motto: Safe, Sane, Consensual!