Actors who play characters that are meant to be siblings, but fall for each other in real life – it happens more often than you might think .
These are the actors who play siblings but were dating behind the scenes…
This is because they played step-brother and step-sister on the drama show, Lost.
This is one vampire couple we could definitely ship.
In this show, Shannen Doherty and Jason Priestley played brother and sister. Despite this little nugget from Walsh family tree, Shannen and Jason couldn’t keep their hands off each other while filming season one, so they eventually made it official and dated in real life for that whole season.