There's also "Emma" by Hot Chocolate from 1975, which ends with the narrator finding the titular Emma dead of an apparent suicide.

Trying to stay away from songs that had the same songwriter and/or producer (otherwise Katy Perry "California Gurls" and Ke$ha "Tik Tok" would be a slam dunk, as would Beyonce "Irreplaceable" and Rihanna "Take a Bow"…)