One of my deepest, darkest secrets is that I read the wedding section of the NY Times every Sunday. (Please don't tell anyone.) It's actually fun, if you're the type who likes to look for correlations.
One thing I've noticed is that the guys who marry each other (the Times seems to make an effort to report on every gay wedding it can) tend to resemble each other to a startling degree. This is not the case with gay women who get married. With them, it is often apparent which is the "husband" and which the "wife."
Lesbians obviously have their own versions of "tops" and "bottoms." But I'm not sure how to interpret the gay men's choices. They often look like very nice guys, the kind who would just fall all over themselves being politely helpful if you asked for assistance. But one can't help but wonder if there isn't a certain amount of vanity, or even a deeper narcissism at play.
With heterosexuals, the strongest correlation seems to be between the amount of money the men make and the beauty of the bride. You can't always be absolutely positive how much money a guy has, but you can certainly get a sense from his occupation, or lineage. And looks, while subjective, are a matter of general consensus. It's not a perfect correlation, but it's close.
Where men are concerned, it all seems to boil down to vanity or buying yourself a beautiful wife. Take your choice.
Not a pretty picture either way.