I voted less than a year.
My ex-wife and I dated for about two years before I proposed.
My ex-fiance and I never really dated, just went straight into engagement. We were best friends for about six months before that though. Just she had been dating someone else at the time.
My fiance now though I've known for about four months. I plan on marrying here as soon as money permits. And yeah, I know you can get married with little money, but I want everything perfect.. for her. Hopefully she'll only get married once, so it needs to be special.