The problem with guy-friends

Now most romance novels(expecially for young girls) usually include these four things:
1. The sweet, innocent, unpopular girl(usually the lead)
2. The hot, atletic guy who the unpopular girl likes
3. The guy friend who is friends with the unpopular girl and has always been there for her
4. The jealous ex-girlfriend of the hot, athletic boy

Now we know that usually it ends when the Unpopular girl finally wins the heart of the Athletic guy but dumps him when she realizes how much of a jerk he is. She then finally dates her guy-friend. Now most authors try to do that and they usually end with the girl getting together with the guy-friend. The only problem about that is that it is WAAAY to obvious.
Though some people agree that you rather date your guy-friends than a popular jock. It does send a good message to girls, but it does make the plot very predictable.
Though not all guy-friends usually end up dating the girl. In Twilight, Bella dates vampire Edward rather than her friend Jacop.
Ok now you decide, are Guy-friends in books a good decision or a easy way to a predictable plot?
-AM