where do we draw the line

Verse 1:
These days, don't like to be myself
So that day you left I met someone else
How could it be so obvious
I'm not holding my breath for nobody else
So where should I go tonight

Most nights I drive, on my own
Now the only thing next to me is my phone
Playing the 1975,
And all your favourite songs that we used to like
Now, these songs just make me feel alone

Pre-Chorus:
But I've been loving myself
And I'm losing sleep over thinking
Bout you loving somebody else
And I guess that's fine
All I see is familiar faces
In unfamiliar places
And I'm scared to leave my house
And I don't know why
So where do we draw the line?

Verse 2:
So, I'll let my feelings fall out
Cause I need to know right now
Just tell me this won't work out
So I can move on

My heart knows I won't allow
Us to talk things out
Cause the way you left me broken
It'll never mend

Pre-Chorus:
But I've been loving myself
And I'm losing sleep over thinking
Bout you loving somebody else
And I guess that's fine
All I see is familiar faces
In unfamiliar places
And I'm scared to leave my house
And I don't know why
So where do we draw the line?