Khloe Kardashian wedding

We've all dropped our jaws at reports that Khloe Kardashian is getting married Sunday -- after knowing beau Lamar Odom for about only six weeks.

The celebrity world is a universe of its own, but I've seen month-long relationships turn into marriage in "real life" as well.

In those situations, everyone's first tendency is to say you can't possibly really know somebody after only one month.

For me, that's certainly true. It takes me half a year just to remember a boyfriend's middle name.

We're critical of spur of the moment marriages.

But when a couple celebrates a 50th anniversary and tells a story of how they got hitched after three weeks, we "ooh," "aah" and point to a belief in love at first sight.

We like to think we're the ultimate authorities when it comes to relationship wisdom. Sometimes, we get satisfaction out of believing our advice is central to averting a love casualty.

But the truth is, when your friend has decided to value heart over head, your advice -- no matter how rational it sounds -- will go in one ear and out the other.

Because by then, your friend has entered a place where gooey emotions overrule pro and con lists. It's a place where "I love you" gets priority over "we should really talk about this."

And strangely, as much as outsiders hate to admit it, it's also a place where some of the best decisions are made.

Emphasis on the "some."