This could pertain to the famous unsolved murder of Dahlia. A stalker wanted to be with her and when he/she learned he/she couldn't have her (he/she was under the illusion that they were in a relationship together) he/she killed her so no one else could have her. "I left you open/wondering" is a good tie in where the stalker kills her. In the songs case I guess its wanting what you can't have and it breaking your heart.
This could pertain to the famous unsolved murder of Dahlia. A stalker wanted to be with her and when he/she learned he/she couldn't have her (he/she was under the illusion that they were in a relationship together) he/she killed her so no one else could have her. "I left you open/wondering" is a good tie in where the stalker kills her. In the songs case I guess its wanting what you can't have and it breaking your heart.