At the risk of sounding like a cynic... Good on ya to all the posters here extolling the virtues of being married to your best friend or soul mate... BUT... Like TJ99 pointed out, there is a high probability that for half of you the shoe might be on the other foot someday. If you've narrowed your life down to a circle of two, you'll find things a bit sticky when that day comes. While women (or men) come and go, your real mates are mates for life... After your first divorce you'll realise that too.
Hell, two of my best friends live in Cape Town and I fly down three or four time a year for a boys weekend with them.
This ^^