I have been somewhat of a fan of Eminem for the last 10 plus years and the more that I listen to him, the more I think that he might have BPD based on his lyrics and how he describes his relationships. Four songs in particular which seem to show BPD tendencies in the lyrics are Stan, Spacebound, Love the way you lie, and Kim (probably his most controversial song). There are of course others that could be mentioned. I will post links to these songs with lyrics. :: Trigger Warning ::
Stan
http://www.youtube.com/watch?v=6tf_hCmP_4I
Spacebound
http://www.youtube.com/watch?v=XJ2bjStuwyY
Love the way you lie
http://www.youtube.com/watch?v=ZGT6AKt3eYM
Kim (Big trigger warning)
http://www.youtube.com/watch?v=TNXYvidMaTM
Anyways, let me know if you agree, I know that people have talked about "Stan" and "Love the way you lie" before here. If there is anyone else who can think of other songs from him that might fit BPD traits feel free to post.