My aunt, on the topic of love, has always said "when you feel, you know..." and I was starting to think that the concept of boundaries was as nebulous as trying to define the concept of love.
Rules are Condoms: An Imperfect Metaphor
Try to make a rule that your partner will never develop feelings for a sexual partner and be prepared to find yourself on the business end of a Klingon pain stick.
On holding a dominant to his own rules
That's not what I wanted, but it's what he thought was best and he was the Dom.