If you lurve Marcus Flutie with the all-consuming lurve that most people devote to their handsome, charming, slightly nerdy dentists, then you should read Perfect Fifths. I've never been his #1FANgrrl, so whatever. There was way too much poetry in this book.
But, if you can read it in three hours, you can mostly skip the poetry (at least skim it). In that case, it might be worth it just to complete the series. I mean, it was only occasionally painful.
I guess what it comes down to is that I was never in this series for the love story, but for the coming of age story. There's pretty much none of that here, just the Great Romance. I am rarely driven by Great Romance.
And thus ends this adventure.