Wondering abt the lyrics of Together When...

[ayuzlove]

ok...the 1st 2 sections of the song are

We started to walk calmly and determinedly
With the same scar in our hearts
With our backs to each other
Without looking back

We believed
We found out one unchanged thing
But we felt it was changing
And took a step back
Yet another step back afterwards
So as not to be hurt

however, looking at the 1st section, we can imagine that ayu and the other guy have their backs facing each other, just like in the pv...however, in the 2nd section, i was wondering abt this part "took a step back", if their backs are facing each other, won't they be coming closer together if they took a step back?

so the qn is...are the different sections of the song suppose to be independent of one another or are they in one way link up?

sorry if this is a weird and stupid question