Why are parts of the lyrics of the Herzeleid booklet in French?
The story goes that they did not think “Heirate mich” would go over very well, and by printing the lyrics to it in French then less people would care. They didn’t want that one song to stand out so much so the put the songs before (“Das alte Leid”) and after (“Herzeleid”) in French as well. Whether or not this is true, I don’t know, but it sounds probable.