D is now for Dom

D and I originally met online because he wanted to explore his dominant side and needed a BDSM pal. I felt the terms of my agreement with Z allowed me to play at spanking etc with a partner, but not to get into the intense control games Z and I play.
In the time I have been with D, D/s has been a smal percentage of how we spend our time, but the night we spent together this week was different--we started playing as soon as we went into the bedroom