May December / December May

When I was 21 my first boyfriend was a lot older than me ... in his forties ... but I thought it was fine and we were together a while, a number of years. He was great. Older man, younger woman.

And today I was talking with someone about the reverse and I have to say, perhaps it seems sexist, but there's something not quite right about older woman, younger man. I know Demi and Ashton would disagree, but ... it feels different to me.