Gaspard Ulliel was 30 in It's Only the End of the World when he played the character 'Louis-Jean Knipper'.
That was over 8 years ago in 2016.
In 2022 he died aged just 37, starring in 44 films in his career, 13 of those after It's Only the End of the World was first released. If he were alive today he would be 39.
In It's Only the End of the World, I think Gaspard Ulliel looks: