Dragon and i have always been momogamous. If he wished to bring in another slave, i would deal with it. (What Dragon wants, Dragon gets.)
Big surprise, i came into our relationship with *gasp* baggage -- mostly relating to self-esteem. He says i have "delusions of inadequacy". i am his property and He feels it is his responsiblity to not only maintain, but to improve this property. Very early on, He informed that i was going to have self-esteem "in spite of myself". He promised me on the day he placed my eternity collar on my neck that he would never do anything to make me feel that i am "less than enough".
So the decision of monogamy is his. I simply accept.
Your mileage, as always, may vary.
muse