We were together just over 1 year before we got engaged but were engaged for 2 years before we got married.
My sister on the other hand has been engaged since December but has been with her (now) fiance for almost 6 years. Personally, I wouldn't have waited that long but we are very different!
Saying that, I think that you should propose now for a S/S wedding as it takes ages to plan plus you'll need to book the venue well in advance too as they get booked up fast particularly for fridays & saturdays.
Good luck & be romantic - don't forget it doesn't mean it has to be expensive!!!
