Wasn't Supposed To Happen

I'm not supposed to feel this way

Considering what I've put myself through

But my defenses have crumbled away

Eroded by constant exposure to you

At first I took a passive role

But my heart just wasn't satisfied

And now that I'm an active participant

From the feelings I can no longer hide

Each day, I get a little bit stronger

But my heart, it still wants more

That is why on that Saturday night

I showed up at your door

Now that I've been with you so much

I never want to be apart

You weren't supposed to open the door

And I wasn't supposed to open my heart