I'm not too sure but looking at the lyrics I think it might mean something like this, and I'm just taking a wild guess here:
Someone is depressed or regretted something "Remember the day when we were out all night
I wish that I can get the day back and tell you it's alright
Cause we all do the same thing, we just don't realize
That we're living on borrowed time"
~
"My eyes deceive me, but it's still the same" Might mean that she's trying to see something good out of this and trying to make it seem like she's fine but really, she's not.
~
"You chose the road that I'm walking
Now it's your soul that I'm caught in
And you're not hearing when I'm calling
Calling your name"
It might mean that someone she loved has chosen the same path she has (i.e. regretting a certain night/some sort of mental illness) and she's calling out to tell them that they're going the wrong way but they're not listening to her.
~
"I'm there with you, here by my side"
It could mean that she supports them no matter what path they've chosen.
~
"Nothing here, no one talking, knowing it's too late"
No one is helping and it's too late to change

So yeah, that's what I think the song might mean.