Definitely about being in a relationship too long.
The singer is explaining that the subject has a fear of being alone, which is the only thing keeping him in a relationship with a woman he no longer loves. Their love, though beautiful once, has died.
The speaker is saying "what are you waiting for? Someone else to take her from you? You'll never let that happen. You have to let her go yourself. It'll give you your life back. You won't feel like the rest of your life is predetermined/effectively over."
There's fear of being alone, but the more important fear is the fear of being with someone who you shouldn't be with.
Definitely about being in a relationship too long.
The singer is explaining that the subject has a fear of being alone, which is the only thing keeping him in a relationship with a woman he no longer loves. Their love, though beautiful once, has died.
The speaker is saying "what are you waiting for? Someone else to take her from you? You'll never let that happen. You have to let her go yourself. It'll give you your life back. You won't feel like the rest of your life is predetermined/effectively over."
There's fear of being alone, but the more important fear is the fear of being with someone who you shouldn't be with.