I've noticed in a lot or men it seems to be. You miss your youth when life consisted of discoveries fresh and new. And perhaps you hold your love at that time as having been more pure and uncomplicated. I would guess with her you felt many things that you liked. I used to go out with a man who tells me the same things - how much I meant to him when we were together etc. Which was over 40 years ago and I was a dumb teenager.