Most movies are about a guy who is in love with a girl, but some movies do a truly terrible job making the girls that the guy loves seem at all appealing. Here are some girls we're supposed to love who are actually terrible:
Zack Morris' love for Kelly Kapowski was one of the driving forces of the entire series, and it never made any goddamn sense. Her character is a prime example of someone we were just supposed to be on board with loving for many years entirely because she was pretty. Prettiness can maybe buy you a year of believable infatuation, but beyond that, you really need some kind of personality. And Kelly didn't have one of those. She was just a generic popular girl who never even laughed at Zack's antics. Jessie Spano, on the other hand, now there's a girl to get excited about.
Jenny is supposed to be a fickle, uneven character that embodies the social change happening in Forrest's lifetime. Ok. But that doesn't mean she's forgiven for always stringing him along and ditching him, then keeping his child a secret until she's dying. That's not the kind of girl you want your main character to end up with. Also, you know, that whole bit about the questionable ethics of making sexual advances towards a mentally impaired man. We can all agree that that's pretty messed up, right?