When it comes to filming movies and TV shows, there are quite a few things that could get awkward. For instance, actors may end up having to work with people who have dated their exes. But you know what's even weirder? When co-stars who play on-screen family members actually date in real life!
There are, however, quite a few celebrities who would beg to differ, because they've actually had real-life relationships with their on-screen relatives — whether it be a sibling, uncle, or even a parent.
Click through the gallery to see all the times stars ended up dating their fictional relatives.
Lily Collins dated her on-screen brother, Jamie Campbell Bower.
Their characters are not really siblings by the end of the story, but throughout the series, fans are led to believe that they are. Lily and Jamie played those roles in The Mortal Instruments: City of Bones and started dating while they were filming for the movie.