Why is it that boys only want to date and marry younger girls. Here is one reason. They are NOT on the same intellectual level as girls their own age. A 25 year old boy is just getting their feet wet in the real world. Well not in the real world, but taking a few hours out of yeshiva learning for dating purposes. While girls their own age have finished college and are working for many years. They are educated, established and know what they want. They are NOT on the same level and would have nothing in common and nothing to talk about. They are not on the same intellectual or maturity level, so boys are looking for girls that are basically on the same level as they are.
Boys who are educated and are on the same level are NOT afraid to date someone who are at their age level or even older because they are looking for intelligent, educated and confident women who can keep up with them and their friends.