After 13 years of being with the same person, 6 years of that is marriage.. can you fall in love with that person again?

Got to give us more info into what is going on so that we can help you.

Getting on even better, more communication, more intimacy and I look at him and think WOW HE's GORGEOUS :)

Understanding each other more as well...

Are you asking for advice or a discussion?

Was something happening before that you didn't feel as though you loved him?

No I always loved him, but you know what crush feeling when you first met the man or woman of your dreams... it's that feeling.. should I tell him as well?

Yes it is very possible to "fall in love more" with a person you have been with for years. It requires work, just like any relationship. Often it helps to go to couples counseling or to try things to improve a relationship.
There is a book I highly recommend in counseling called
"Love Languages" It has opened the eyes of many as to what their partners are really saying or wanting.

But growth also means changes, which is harder to do as people grow in relationships

Should I tell him what I am feeling?
Thanks, I will look out for this book

Hi Krs, been a long time my friend. By all means let him know you are falling for your guy all over again. And tell him you look forward to keep falling for him, again, and again, and yet again.

That's what keeps old people like my wife and I young, we keep falling for each other, at least once a week.

Thanks Talaniman