So...
...the girl in question friend-zones the "nice guy", screws the jerk, and then abandons both the nice guy and her friend, but it's okay because they fully understand that she is special and is meant to go off and do special things.
shareIt was a sweet movie about friendship. However, yes, Eve didn't need to leave James and Cassie. Having a happy ending doesn't mean it is a bad movie. I guess the implication is that James and Cassie remained friends.
"But I have infinite tenderness for you. I always will. My whole life."