We got together 6 months ago, but had been friends for a year before that.
Once we made the leap it became very serious very quickly and we spend nearly all out free time together. I never saw that coming for me, having enjoyed an independent single life for a long time, but it's been and still is lovely.
That said, despite all the time we've spent together, it still feels very new and like "dating" rather than a partnership. Does that make sense? My parents were married within 9 months of meeting, and whilst that's really not what I want (with anyone) at this stage in my life, there's no way I'd want to marry him this soon, even it it was. Parents are still married 50+ years later BTW.