Rubbernecking is the practice of looking at a tragic event (eg a car crash), it's often used to describe cars slowing down on a motorway or crowds forming around an accident. Normally the act of rubbernecking leads to problems with movement around the incident.
I reckon in the context of this song the singer was too busy looking back at the past or looking at all the problems in his relationship that he didn't even realise they had drifted apart. Or the act of rubbernecking caused him to push his lover away because they couldn't move forward, they couldn't go anyway because hw as too obsessed with the mistakes or tragedies in their relationship.
Rubbernecking is the practice of looking at a tragic event (eg a car crash), it's often used to describe cars slowing down on a motorway or crowds forming around an accident. Normally the act of rubbernecking leads to problems with movement around the incident. I reckon in the context of this song the singer was too busy looking back at the past or looking at all the problems in his relationship that he didn't even realise they had drifted apart. Or the act of rubbernecking caused him to push his lover away because they couldn't move forward, they couldn't go anyway because hw as too obsessed with the mistakes or tragedies in their relationship.