@Learning Curve - Please don't take it personally, but I've never had any sort of problem like this. I've had multiple medium and long term relationships so there has been plenty of opportunity for problems like this to creep up, yet its never happened.
So what are you doing or not doing? What part do you play that might be causing this?
I guarantee you here are the reasons I don't have these problems:
-I certainly never ask a woman for what I want in the bedroom, I simply tell her or direct her. Women like men to lead and when you do they submit easier and are happier to do so.
-I set the tone of what type of sex transpires(p0rn star, rough, loving, passionate, etc).
-I have my way with women. I position them how I want, and they love it.
-I push boundaries.
-I do every position in the Kama Sutra.
-Sex toys are fun.
-New locations: parking garages on the top level, hotel room windows, adult video store, in the woods, in public, parking lot.
-I set the expectation.
-I'm very adventurous, pretty much nothing is off limits.
-Her pleasure is as important as mine. I always make sure she is satisfied.
-I always have candles going in the bedroom.
-I let her know how her sexy body turns me on.
-If you think penetration and no ****oral stimulation makes you great, you need to expand your skill set.
-Sex always lasts longer than 30min. I can go 3hrs.
-Sometimes I'll beat that pu$$y up so bad that she'll be sore the next day and loving it.
-I call them my personal wh0re/kum slut whatever when I'm pulling her hair.
I've always looked at sex as I'm the one that runs the show. All I need is a willing participant to follow my lead. If I do a good job it falls into place and we are both very satisfied.