Wow... that brought tears to my eyes!!
I would go from where you are... and add in when he first asked you out, to how you felt to things you did togther (what he would remember) and how your love continues to grow and blah blah blah and end it with how you hope your feelings never go away...

good luck

Heather

Why did you stop so soon?!?!....Lol...gosh I was so into it. =P But seriously you should just leave it as it is and keep on writing just the way you are...it was beautiful. And he'll love it no matter what you put in the end...you have a magical and amazing way of writing, there's no way he won't. Just write what you feel, I guess...haha. Not much of an advice giver. =D

Good luck and take care ;)-stargazer38