16. Mr. & Mrs. Smith
The next famous celebrity couple was so open about falling in love while filming, it was no surprise when these two got together post-release. “Mr. & Mrs. Smith” was one of the most buzzed about movies ever, and not only because of the stellar performances from co-stars Angelina Jolie and Brad Pitt. Pitt was married to “Friends” sweetheart Jennifer Aniston when he started filming for “Mr. & Mrs. Smith”, but the celebrity couple didn’t last long after. Aniston filed for divorce just months before the film premiered, citing “irreconcilable differences”, but many believe it was due to Pitt’s infidelity while filming. Pitt has even admitted as much; during an interview, he confessed he “fell in love” with Jolie while shooting the film.