Love Me If You Dare (2003) in English dub

[renegadeviking]

As adults, best friends Julien and Sophie continue the odd game they started as children -- a fearless competition to outdo one another with daring and outrageous stunts. While they often act out to relieve one another's pain, their game might be a way to avoid the fact that they are truly meant for one another.
Julien Janvier lost his mother young, drifted apart from his working class father and ever closer to confident Sophie Kowalsky, the Polish class outsider. Their dares game, symbolized by an interchanged music-box, grows ever bolder, regardless of harm to others and each-other. In his college years, it even suspends their relationship and toys with their marriages, but they are drawn back to each-other irresistibly.

imdb 7.5

https://www.imdb.com/title/tt0364517...?ref_=tt_ov_pl