For the record, the original proposed title for this trope was "The Romeo", but that was rejected because too many people felt it wasn't intuitive enough. The reasoning was that, while most people know who Romeo is, they have very different ideas of what he represents.
Several alternative titles were suggested, but none gained mass support. Eventually, Serial Romeo was settled on as the best compromise name: it references Romeo, and explicitly conveys the fickle nature of the character.
Hide / Show RepliesInterestingly enough, for anyone who's read Romeo and Juliet, Romeo was a lot like this (his original flame in Act I was a girl named Rosaline, and his fling with Juliet took place over 3 days).
The current name still works though.
Howl's Moving Castle: Any objections to changing "falls in love" to something like "meets and decides to fall in love"? After all, a major point in the book is that he has an unusually legitimate reason for it never feeling right: he's quite literally heartless until the book's end, and lacks the normal ingenuousness of this character type. (That lack is itself a major theme in the book: Howl is in fact going to enormous effort to distract himself from honest self-examination... as it turns out, also with horrifyingly good reason.)