Most men I have met without doubt prefer to have sex with a partner that is reciprocal and I’m quite sure beyond doubt – if there partners were a little more enthusiastic perhaps they would find it easier to be monogamous, who knows? Lets face facts its hard to be with the same person ‘forever’ let alone when you feel rejected!
“I am happy now that George calls on my bed chamber less frequently than of old. As it is , I now endure but two calls a week, when I hear his steps outside my door I lie down on my bed, close my eyes, open my legs and think of England.” Lady Alice Hillingdons journal, England 1912