Lyric discussion by blu_girl_4eva 

I watched an interview with Adele, where she said that this song was about 2 of her friends, who were in a relationship together. The man was a heroin addict, and it was about their journey as he went through rehab, and how they overcame it together. Absolutely beautiful song.

Ah! That definitely solves the mystery. I do like that it addresses all of what is going on with the supportive partner, rather than following his journey. She's embarrassed and doesn't want anyone to see her until he is better. She doesn't want the judgement from those around her for being with someone who isn't worth the risk, in their opinions. Will he be better when he's out of rehab or will he just relapse and be a total waste of time and energy on her part?

after getting the idea of this song, thanks to your comment, i just fell deeper in love w/ this song. can't. stop. repeating.

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