Y must opposite sex attract?

I have too many things in my mind now and i really dunno where to start..

Y must everything turn out to be like that also?
Y is it so hard to be with someone?
Y must I be caught in it once again?
Who say I dun understand the feeling of pain and helplessness?
Who say it's so easy to let go?
And ...

In the end,
I choose to run away... but I dunno what I have to do...
So do walk through with me...
Pick up the strength and courage and i believe we'll make it...