When I Was Your Man is a song written by Bruno Mars, Philip Lawrence, Ari Levine, and Andrew Wyatt. It was originally performed by Bruno Mars, and first appeared as the sixth track in the album Unorthodox Jukebox.
https://en.wikipedia.org/wiki/Unorthodox_Jukebox
https://en.wikipedia.org/wiki/When_I_Was_Your_Man
