I don't know if your question was over the attitude of doms and dommes to long term relationships. My own limited experience is that they never were intending a long term relatonship. And certainly not a monogamous (spelling?) one.

I think its like a predator thing, they enjoy new food, new partners. though I'm sure there are plenty who just want a long term one to one relationship .. it was like the more experienced and good at it they were, the less chance there is they want only you for ever and ever. Think where you met and the circumstances, that probably gives a clue what they were looking for.