Lyric discussion by mymindisbomblike 

Cover art for Come Undone lyrics by Robbie Williams

Come on, this song is not about cutting. I know songs are open to interpretation, but there's simply no way it's about cutting, he mentions mirrors in the same line, he doesn't want it open to interpretation, he's talking about drugs. I don't think the song is about drugs, but that line most certainly is.

He's being cynical about his profession and lifestyle. Drugs/temptation everywhere, money over art etc. However that's pretty old news, I feel like the entire meaning of the song comes down to the lines

And sing love songs We sing love songs So sincere So sincere

I think he's saying there's so much falseness in his work, but when he sings love songs, he's truely being sincere, even if it's still about the money. I hope that's what he means, just being cynical about the music industry is pretty old. I love the way he sings those lines, and I feel like he really emphases them, the meloncholy nature of it all. It's false, but it's real, he hates his fans, but his songs only matter because they care about them.

Could be wrong on the second part, but the line is 100% about drugs, even if the lyrics were ambigious (they aren't), Robbie Williams does not come off as a cutter.