Well, perhaps there is a story, a true one, which involves some girls, and 'we' are a group who like those girls because of what happened in that story. For example, if the true story was about some girls showing great kindness during a difficult time, 'we' might like them for their noble characters shown in that real story.
Sure. Let's say there was a true story about some girls who volunteered to clean up a polluted beach. Their environmental awareness and selfless action made 'us' like them.