Logan Lerman and Alexandra Daddario share the same features.
Both about the same height
Same complexion
Same dark hair
Same striking blue eyes

So in The Lightning Thief movie, is it just me or when they kiss (ugh, sappy movie love . . . Stick with the book, people!) Did it look like Percy kissing his cousin?
. . .
Oh wait,
. . .
He was. (Half cousin!)