what are some cute emo/acoustic/piano songs about love or heartbreak?

All of them

http://www.youtube.com/watch?v=EK2tWVj6lXw

a thousand miles by Vanessa Carlton

It's not EM and it may be outside the realm of music you are familiar with but check out the album Neil Young - After The Gold Rush. It may be just exactly what your looking for.

Get Up Kids - Overdue
The Ataris - Unopened Letter To The World
Alesana - Apology (acoustic remix)
Between The Buried And Me - Shevanel Take 2

5GDP - the bleeding(acoustic version)

Best song ever.

The Art Of Succinct Compliments (Acoustic) - Summertime's End
http://www.youtube.com/watch?v=8fkaxTB9mKs

Lyrics:

I know I struggle to find
The way to speak my mind
In twenty five words or less
I never have that success

'Cause sometimes I want to say
All the things that I'm thinking about you baby
It's never seemed to work before
I guess I'll try it just once more

So here I go

You're cute, you're sweet, you're soft, you're smart
You fill the gaps inside my heart
You're nice to hold and hard to leave
You're everything that's good to me

I love your hair, your pretty eyes
The way you leave me mesmerized
I guess there's just one thing that's true
Above the rest - that I love you

I'm sorry if I make no sense
The art of succinct compliments
Has never been a skill of mine
But I'll just do it one more time

So here I go

You're cute, you're sweet, you're soft, you're smart
You fill the gaps inside my heart
You're nice to hold and hard to leave
You're everything that's good to me

I love your hair, your pretty eyes
The way you leave me mesmerized
I guess there's just one thing that's true
Above the rest - that I love you

'Cause all I really have to do
Is tell you how much I love you

Look up Something Corporate/Jack's Mannequin,(Piano Rock) They are my favorite =0
The Spill Canvas is pretty freak in awesome too.
Good Bands
-Faster Faster
-Sparks the Rescue
-Save it For Sunrise
Oh yeah for other piano acoustic songs look up Mayday Parade and Go Radio. =)