I’m 12 years older than my wife (who is 52). I guess she gets all the older guy she wants from me because she tends to go for younger lovers. But she has said to me that age is not the main determinant. Her list of men she has the hots for includes a fair few older than me even, so it’s all quite subjective really. Then again, I suppose once you are north of 50 the word ‘older’ has a different implication than when you are, say, 30.