Journey - Open Arms
Journey - Faithfully
Foreigner - Waiting For A Girl Like You

i dont know whats romantic but i have some that are important for me:
Wild world by Cat Stevens. . . i made a girl cry for 3 days with that one...
wish you were here by pink floyd. . . me and my gf's song.

Tchaikovsky's Romeo and Juliet Fantasy Overture. Or Apocalyptica's version of Metallica's Nothing Else Matters.

Crash by Dave Matthews Band
Such Great Heights: The Postal Service
Wonderful Tonight: Eric Clapton
Be With You: Mr. Big
Vindicated: Dashboard Confessional
Grow Old with You: Adam Sandler

Uh, you do realize this song is about a guy obsessed with a whore right?

The Glory Of Love

Personally, I like the Doo Wop version sung by The Five Keys.

Billy Hill wrote it in 1936 and it was first recorded by Benny Goodman.

Lyrics

Mr. Big "Shine"
Eagle-Eye Cherry "Save Tonight"
Seether & Amy Lee's "Broken"
Del Amitri "All For You"
Goo Goo Dolls "Iris"
And one heartbreak song: Dashboard Confessional "Screaming Infidelities"

Marvin Gaye - Sexual Healing
NIN - Where in this together
Twixt - Plastic Boy

depends on the mood and emotional connection to the song/person

Older jazz love songs are wonderfully romantic. I love jazz of course, but I still don't feel I have a bias making that claim—even if jazz isn't your or your somebody's "thing", just try learning the words to one and singing it to them ... and watch them melt. (I know it's worked on me, anyway.)

I know it's hokey but:

Total Eclipse of the Heart: Bonnie Tyler

I always thought that Something by the Beatles was very romantic, although I don't really like it as much as "Girl" and "I've Just seen a Face"

But this one is so moving, it has soul:

'Someday We'll be Together' by the Supremes.

Someday we’ll be together
Say, say, say it again
Someday we’ll be together
Oh, yeah, oh yeah

You’re far away
From me my love
And just as sure my, my baby
As there are stars above
I wanna say, I wanna say, I wanna say

Someday we’ll be together
Yes we will, yes we will
Say, someday (some sweet day) we’ll be together
I know, I know, I know, I know

My love is yours, baby
Oh, right from the stars
You, you, you posses my soul now honey
And I know, I know you own my heart
And I wanna say:

Someday we’ll be together
Some sweet day we’ll be together
Yes we will, yes we will
Someday (tell everybody) we’ll be together
Yes we will, yes we will

Long time ago
My, my sweet thing
I made a big mistake, honey
I said, I said goodbye
Oh, oh baby
Ever, ever, ever since that day
Now, now all I wanna do is cry, cry

Hey, hey, hey
I long for you every night
Just to kiss your sweet, sweet lips
Hold you ever, ever so tight
And I wanna say

Someday we’ll be together
Yes we will, yes we will

Somebody - Depeche Mode

Fields of Gold - Eva Cassidy. The voice. The lyrics. The melody...

Majik_6 singing Adam Sandler's "I Wanna Grow Old With You", because it reminds me of what the next 60 years will look like for us.

"To Be With You," by Mr. Big
"Heaven," Bryan Adams
"Yellow," Coldplay
"Barely Breathing," Duncan Sheik

"Always with me, Always with you"

---- Joe Satrianai Surfing with the Alien

It is all guitar, but the melodies are very beautiful and can inspire a romantic situation.

Something by the Beatles

Frank Sinatra said it was the best love song he ever heard, and I agree

Green Spandex by Xavier Rudd

The name may be odd but it is a beautiful song.

Unchained Melody by the Righteous Brothers
Can't Help Falling In Love by Elvis
Always by Bon Jovi
When a Man Loves a Woman by Percy Sledge.
When You Say Nothing At All by Allison Krauss. I prefer her version to Keith Whitley's.

I guess I don't put much stock in most current love songs.

Merle Haggard, "I kissed my sweetie with my fist"

....seriously.

Edit: Okay it might've been annoying of me to make a joke suggestion rather than also listing a real song. Death Cab for Cutie - Transatlanticism. I'm a HUGE fan of this song.

Nat King Cole - Unforgettable
Lighthouse Family - High
Sade - Your Love is King
5 Stairsteps - O-O-H Child

Everlong - Foo Fighters ("Breathe out so I can breathe you in...")
Don't Fade Away - Dead Can Dance ("Don't bring me down now/Let me stay here for awhile/You know life's too short/Let me bathe here in your smile")
First Day of My Life - Bright Eyes ("Your's was the first face that I saw/Think I was blind before I met you...")
For Emily, Whenever I May Find Her - Simon & Garfunkel ("And when I awoke/And felt you warm and near/I kissed your honey hair/With my grateful tears")
Butterfly - Lenny Kravitz ("You shine just like sunlight rays on a winter snow/I just had to tell you so")
So Happy Together - The Turtles ("Imagine me and you, I do/I think about you day and night, it's only right...")

I'll think of more I'm sure and will add to the list.

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)