Well, I'll write from my experience.

I believe in living together before getting married. I did that, and was engaged. We lived together for about 6 months, and then he changed his mind!!! I was DEVASTED!!! But, you know what? I'm glad he got a taste of what it was like to live with me LOLOL. I would rather not get married, then have to get a quick divorce. And I'm so glad he called off the wedding, because the person he is today, I don't like!

God works in misterious ways, and everything happens for the best.