- Ryan Gosling + Rachel McAdams
- Ryan Gosling + Eva Mendes
- Emma Stone + Andrew Garfield
- Angelina Jolie + Brad Pitt
- Jennifer Anniston + Brad Pitt
- Vanessa Hudgens + Zac Efron
- Miley Cyrus + Liam Hemsworth
- Penelope Cruz + Javier Bardem
- Heath Ledger + Michelle Williams
- Ryan Reynolds + Blake Lively
- Jude Law + Sienna Miller
- Chris Evans + Elizabeth Olsen
- Alicia Vikander + Michael Fassbender
- Kristen Stewart + Robert Pattinson
- Channing Tatum + Jenna Board
… And the list goes on!
This is because acting is very personal and intimate work. Co-actors open up to each other beyond what normal people do in their usual work lives. Here, opening up is essential to finding personal truth in a fictional story. I wasn’t surprised at all by how many people fell in love on set; However, it doesn’t always last because it’s still working and sometimes the feeling fades.
The original credit for this Answer doesn’t belong to me I’m just a translator, translated from the original post (translate as it is, nothing changed):