Yet another fight is brewing

Yet another fight is brewing,
between the mismatched you and I
I don't know what I'm doing!
Why don't I just find another guy?

We bicker, we fight constantly, it's all we do
We're two pieces of the puzzle that don't mix
We just don't want to connect, me and you
But you always say 'it's something we can fix'

Maybe we can, maybe we can't, but we always try
And to be honest, I really don't know why
I don't know why we let it live, rather than die
And I don't know why the only girl he seems to love, is I

Why do I let this go on, this "love" of ours?
Is it a cover-up from all my stupid sins?
Is it for all the fights that continue for hours?
No, I've realised it's actually, the heart within.