When you are working on a movie, a lot of actors and actresses will get really close to each other. You feel like you are getting to know the person on a very intimate level and spending a huge amount of time with them. You end up kissing them and the role starts to feel like its real life for you. Sometimes this leads to more than just a role and they take the romance off-screen as well. This can work out and others times it is a total train wreck for the couples. Here are 16 celebrity couples who decided to take their on-screen romance off-screen as well.