I would NEVER except sex outside our relationship. No way no how.
I am the oppisite of alot of you i can orgasm quickly and i'm not into foreplay at all its all about the penetration bit for me! I know your all going to tell me im talking crap but i also don't masturbate, i have tried it and it didn't do anything for me, even after years of practicing.
Dispite all this i can go for months and months without 1 single sexual urge in me, then at time i can be a filthy cow, (but this only last a few days to a week)
I suffer with BiPOlar and my libido goes with my mood, when i am feeling low the though of sex makes me vomit and when i have tried to just do it i have had to make excuses to stop during forplay to actually almost vomit this goes for all affection with him and the kids i just don;t want to be touched When i am on a high i want it 24/7 again this goes for affection to and im like a bouncy hugging machine and when im 'stable' i am a once every 2 weeks kinda girl.
Unfortunatley dp doesn't suffer with sod all and constantly has a mega sex drive, i was his first and his only partner and since our firt time togehter he turned into an animal! lol, he does whinge occasionally but i only do it if i want to, if i don't i give him a 'hand' and thats it, he gets his and i get peace.
I think some people just arent into sex period, whoever your with or howevet good they are at it i don't think it matters.
I do think its unreasonable to ask someone man or woman to like in a sexless marriage/partnership if they still have sexual urges but i don't think inder any circumstance should anyone do it just 'do thier duty' i would resent dp if i had to have sex just to keep him happy.
Luckily were have come to a happy level at the moment, he has come to terms with the fact that he wont have sex all the time as his libido wants and i have come to accept that i must consider his feelings in the matter of sexual intamacy.