23 is kinda young IMO. As was mentioned, unless you have some religious or other good reason, why not live together for a (long) while? I cohabitated w/my now wife for 8+ years before getting hitched. By then, we knew the relationship was solid, and marriage wouldn't be all that life altering from what we were used to. Hell, I freely admit the financial advantages were a big reason to make it official.
Made a call, did the Justice of the Peace thing, home in time to lift. Not to minimize the event, but I think the less marriage changes your pattern of daily existence, the better the odds of succeeding. If you go from 5 nights a week at the bar to instant domestication, it's going to be a rough ride.