In my Victorian lit. classes we spend more time talking about prostitution and single men instead of married men. It seems more common for single men to have prostitutes because they couldn't sleep with single women. Women were only supposed to sleep with their husbands and assumed to have no sexual identity/feeling/curiosity of their own. It was also "accepted" that Victorian men developed sexual needs long before they were financially able to support a wife (maybe they should have saved their money better ) Victorian men typically ended up marrying fairly late in life, mid twenties to thirties, if not even later which was quite common. I've never heard this bit about married men having prositutes because risque sex was not allowed in the marital bed. Having not done research, I can't say one way or the other, but it also wouldn't surprise me. Perhaps just not a topic quite novel worthy...except in the French novels all the Victorians were reading...