There is nothing terrible in a relationship as dating or married to someone who is lesser than you as a woman, first at some point he will begin to feel threatened which is a natural phenomenon.

Been here, done that. She's 4 years older than I am, but she doesn't look it. And I looked older than my age(at least before I stopped the rapid growth). I was so cool with her and she's homely either; a perfect gift to mama. But the natural phenomenon rear its ugly head in my spirit and I started seeing the age and not the love as a big "ish". Trust me, what you said is aptly right. It's so instinctual for men.