I think this may be about a woman questioning her relationship. She feels so different and has done so much that it's changed her. She knows that she's hurting her partner but I don't think she's explained it to them properly (the metaphor/actual action of not sending the letter). It's hard to leave or change things because they can't imagine life without one another, but I think she knows deep down that it's time to move on and try something new in order to try and find 'a place for her heart to belong'. It doesn't necessarily mean the end of her relationship - "if we want to we will grow closer together". It's essentially about the uncertainty and disruption of change, in this case a change within herself as opposed to something physical changing in her surroundings.
I think this may be about a woman questioning her relationship. She feels so different and has done so much that it's changed her. She knows that she's hurting her partner but I don't think she's explained it to them properly (the metaphor/actual action of not sending the letter). It's hard to leave or change things because they can't imagine life without one another, but I think she knows deep down that it's time to move on and try something new in order to try and find 'a place for her heart to belong'. It doesn't necessarily mean the end of her relationship - "if we want to we will grow closer together". It's essentially about the uncertainty and disruption of change, in this case a change within herself as opposed to something physical changing in her surroundings.