Messed Up Me

Don't tell me you care,
Or I'll run away,
Which then can't be caught,
And then won't contain.

I'm not one to fight you,
I'll just walk away,
And saying goodbye,
This makes me win game.

I'll take what you're giving,
And store it away,
So then when you leave me,
It's mine all the same. 

Please know I'll understand,
If you stay away,
But know this for sure,
My heart will then break.