Got a friend to translate it, so all props to her

Translation in red.
M2M - Pretty Boy (Mandarin version)
VERSE 1
Tou tou kan ni de lian
When I first saw your face
Xin qing bian cheng qing tian
My mood turned for the better
Wo xiang zhe chuang wai mo mo xiang nian
I looked out of the window in contemplation
Xi wang ni nen ting de jian
Hope you can hear
Ni de hao ni de huai
Your goodness and your badness
Quan bu wo dou xiang ai
I would want love it all
Ni ming bu ming bai shuo bu chu lai
Whether you understand or not I can't tell
Xin zhong dui ni de yi lai
My heart depends on you
CHORUS
Oh my pretty pretty boy I love you
Yin wei yao tiao mei mei bu hui jia zhuang ai
Because of... (not sure what yao tiao mei mei means) I can't go home pretend to love
Pretty pretty boy of mine
Dui ni shuo sheng hai
Just want to say hi
Oh my pretty pretty boy I need you
Oh my yao tiao mei mei zhi xiang ai
Oh... (not sure what yao tiao mei mei means).. only want to love
Shuo ni bu zou
Tell me you won't go
Yao ni bie zou
Don't want you to go
Qing liu xia lai
Please stay
VERSE 2
Kan bie ren shou qian shou
I look at others who are holding hands
Wo ye kan ye ji mo
The more I observe the more lonely I am
Wo xiang yao ni shuo zhi dui wo shuo
I hope that you will tell only me
Shuo ni xin zhong zhi you wo
That you have only me in your heart
Ni ming ming hen ai wo
You know you love me a lot
Ming ming bu xiang yao zou
Know that you don't want to leave
Wei shen me bu gan fu chu tai duo
Why can't you sacrifice more?
Shi bu shi pa zhen ai shang wo
Is it coz you're afraid true love will hurt me?
CHORUS
BRIDGE
Oh pretty boy, pretty boy, pretty boy
Shuo ni ye ai wo
Tell me you love me too
CHORUS
There you go

Enjoy.