I am married, 39, 5'6" 139 lb. My wife cheated with a co-worker (who is twice my size, 6'6" 330 lb) and said even though she "loves" me will continue to do so but wants to stay married as we have a daughter together. She wants an "open" relationship. Her "lover" is a co-worker and also married (but his wife does not really know).
Short version of a long story is I tried to hook up with other chicks (as I'm mostly heterosexual) but with limited success and found myself in a submissive role after a night of drinking and learned that I actually probably like it better than heterosexual sex.
I'm really fit but look kind of feminine (there was a phase in my life where I experimented with transitioning but backed out). My concern is that whether I am too feminine looking and too small down there for a scene like this. With respect to men, I prefer dominant larger guys and exclusively prefer to get pounded and suck for hours. I would say I actually like it better than fucking my wife, who complains that I am too small.
My twitter is @eikokara, wife hates this twitter but I spend much time trying to get back at her for continuing to sleep with this guy (who works at the same company and regularly bullies me in a passive-aggressive way). I am japanese-korean american, my wife is norwegian-finnish american, our daughter is obviously a mix of both.