Which Side Of The Bed?

Did you lie through your teeth did you lie in the dark?
Which side of the bed did the argument start?
Who slammed the door with a stupid, glib remark?
Who started the next operation on our hearts?

There is no cushion, feel nothing at all.
When you're too tired to beg, I'm unwilling to crawl.
So either...
...you've got to big, or I've always been too...small.
That means, I would lose your hand, but I'm scared, scared that I might fall, so...
...let me lie through my teeth, let me lie in the dark.
On this side of the bed, where the argument start[ed].
Yes, I slammed the door with a stupid, glib remark.
Who started the next operation on our hearts?

A slap in the face, it could come to that soon.
Look out, sweep by me say, "Please don't come into the room."
I won't hesitate, I won't let you make me lose.
So don't come into my rage 'cause I'm scared, scared what I might do, just...
...let me lie through my teeth, let me lie in the dark.
Miles away from the bed where the argument starts.
Look, I've stopped my own mouth, I've stopped making remarks,
But please, no more operations on my heart...on my heart.

Which side of the bed did the argument start? (X8)