my submissive and I are 2 - real life, together for 1 and a bit years, and in a fledgeling D/s relationship for half-ish of that time.

as for marriage... d/s brings a deep connection, understanding and communication between the people involved. it sounds hammy, but it feels deeper, stronger... the most honest you can be about yourself.

I don't see why it wouldn't be conducive to a married relationship, to have the kind of big, monstrous communicative abilty that is nesesary for a satisfying, loving d/s relationship.