Married people of Reddit, when did you know you were dating "the one"?

I have recently started dating someone, and I am pretty certain that this is the girl that I want to call my wife someday. I have been around the block and dated my fair share of girls, I am quite far from the lovestruck teenager that finally lost his virginity.

I was just wondering how you all felt when you realized that the person you were with was the one?