Crying for a certain period of time releases oxytocin and endogenous opioids, otherwise known as endorphins. These sensitive chemicals can help relieve physical and emotional pain. (via Healthline) 

Therefore, if you want to "liberate" yourself somehow or just see a classic but painful romance, you are in the right place:

Malcolm & Marie (2021)

Marriage Story (2019)

Portrait of a Lady on Fire (2019)

A Star Is Born (2018 )

Irreplaceable You (2018)

If Beale Street Could Talk (2018)

Call Me By Your Name (2017)

Carol (2015)

If I Stay (2014)

The Fault in Our Stars (2014)

Blue Is the Warmest Color (2013)

Like Crazy (2011)

Remember Me (2010)

500 Days of Summer (2009)

Atonement (2007)

A Walk to Remember (2002)

Titanic (1997)

Romeo + Juliet (1996)

The Bodyguard (1992)