....and this may seem wrong coming from a christian/catholic/whateverIam, if you can avoid getting married. At least not until you really REALLY know someone. I also suggest that you fall for someone when they're having an off moment, you know not at their best. Because once you see the worst and can survive it ok, you can deffiently follow through with the best.
Marriage to me was huge and important and everything. But if the other partner takes a lax view point about that kind of commitment, it's best to avoid it altogether. Getting a ring or a fancy dress or a nice reception can be done without that kind of leap until you actually KNOW and LOVE them for who they are, no matter what.