Giving-up.

I become very slow when it comes to trusting someone. It takes me a little longer to open-up to someone new just like a flower takes a little time to bloom.

But, when it blooms, it blooms wholly, rejoicing each part of its body.

And no sooner than anyone can think, it is either senile or it becomes a fruit. 

Since, you didn't have a great liking for fruits...

So when I started giving in,

YOU started giving-up.