This is a very compelling and powerful song about how you can unexpectedly become passionately "addicted" to a person (like some type of sexual drug). Obviously, the song is about trying to quit them but how that can be easier said than done. For this song, checking into rehab is more about trying to release someone that has a powerful sexual hold on you. The "Rehab" music video features both Rihanna and Justin Timberlake playing a convincing act of lovers who erotically long for each other but who do not really want to let each other go. They have some strong chemistry together in the music video. This song did get some coverage and attention when it first came out, but in my humble opinion it deserved even more exposure and is underrated. Definitely consider getting this song and checking out the video if you like music by Rihanna and/or Justin Timberlake
This song is a good song and it is worth listening to Rihanna's album "Good Girl Gone Bad" where the songs are similar to this one. I would recommend buying the album however the song is very good although not a song to dance to. For anyone who is reading this I hope this helps you. Thank You.