Literally ‘A little one sided crush’, ‘I love you more than you’ (my own liberal translation of the title because ‘I love you more than you’ keeps repeating in the lyrics) is a song by Yumi Arai (Yumi Matsutoya after post marriage) from her 1975 album COBALT HOUR.

Note: I had originally posted the song lyrics on this cover on Youtube under the username @vadasambar. This is a copy/paste of the comment there.

oooo-aaah I love you more than you
oooo-aaah I love you more than you

走り去る車に小さく投げキッス
家まで送ったらそれでサヨナラ

A small flying kiss to the car that’s leaving
You drop me till home and just say goodbye

こんなこといつまでくり返すのかしら
わたしは待ってるのやさしいプロポーズ

I wonder how long is this going to repeat for
I am waiting for the kind propose

いつだって　I Love You More Than You
You Love Me　少しだけ片想い　More Than You

Always, I love you more than you
You love me only a little
Unrequited love more than you

真夜中の電話は世間ばなしばかり
それさえ12時までシンデレラ・リバティー

We chat over phone at night
And before I know it, it’s 12 ‘o Clock
Cinderella’s time has ended
(Ding dong ding dong)

のんびりとかまえてあなたは知らないの
恋する気持には羽根がはえてる

I act carefree but inside
My heart is fluttering with love

いつだって　I Love You More Than You
You Love Me　少しだけ片想い　More Than You

Always, I love you more than you
You love me only a little
Unrequited love more than you

oooo-aaah I love you more than you
oooo-aaah I love you more than you

ほかの娘のはなしを平気でするあなた
わたしのやきもちを楽しんでるの

You talk about other girls as if it’s nothing
You like seeing me jealous don’t you

プーメランみたいに遠くへ飛ばしても
わたしがかえるって思ってるのね

You think I will come to you
Even if I am far away
Like a boomerang

（ｘ３）
いつだって　I Love You More Than You
You Love Me　少しだけ片想い　More Than You

(x3)
Always, I love you more than you
You love me only a little
Unrequited love more than you