Sweetheart:

"I just wanna know you whole heart is mine..."

It is, has been since the third walk to your car, will be, always.

"...that you want this more than you've wanted anything else in your life..."

I think I've shown you that.

"...and know that it won't be easy, far from it...but it will be so worth it..."

If I\we weren't ready, if I didn't think it would be worth it, I wouldn't still be here.

"...I promise you, I will stand with you thick and thin..."

I feel like I already have :-)...and therefore will.

"...your everything I ever wanted and then some..."

That doesn't even come close to describing what you mean to me...