Hmm, for me a lot of rock, hard rock, heavy metal is created in a way that maybe is not sexy per se, but is about sexy stuff. Bands like Marilyn Manson, Europe, Def Leppard, AC/DC, Rammstein and many, many more sing quite a lot about girls, sex and often in a way that - I think - is supposed to be arousing (maybe less with Rammstein). For me industrial (and I mean old school aka true one) is least sexy genre, cause even when it talks about sex, sex is always dirty, violent, people are disfigured, there's rape, fringe fetishes etc., so it's more about "shock" than sex; it's anti-erotic in a sense, which is good for the anti-musical approach of especially noise, industrial noise acts. There's a lot of sex in some folk noir/dark folk bands though with acts like Ordo Rosarius Equilibrio or Spiritual Front. For me personally I often found sex lyrics in metal (but in aggrotech too), especially the more kinky, agressive ones as artificial, as posing and not smth truthful