Lots of good ones here already... Crash, Crush, Angel. I haven't heard After Her, but I'm definately interested...

Marvin Gaye's Let's get it on is another excellent song as is John Meyer's Your Body is a Wonderland.

Seven more songs that haven't been mentioned... (It's just so hard to find the most romantic song.)

Something in the way she moves - James Taylor
Crazy Love - Van Morrison
Someone like you - Van Morrison
I could not ask for more - Sara Evans (Her's is the version I like best)
A kiss to build a dream on - Louis Armstong
La Vie en Rose - Louis Armstong
Change partners - Harry Connick Jr.

I just skimmed the three pages and saw several I'd tab (a second on Allison Krauss' take on "When You Say Nothing At All," Medusa).

Here's two I didn't see:

I Want To Be In Love by Melissa Etheridge (gets off to a rocky start with a clumsy couplet, but recovers nicely).

I'd Die Without You by P.M Dawn (Why, oh why, can't soul music be this good these days? Motown used to churn these great tunes out)