Complex sentence: After Arturo García Buhr ended a romance with Tita Merello, Olivier and Buhr become a couple in 1950, their relationship ending after Buhr's suicide on 4 October 1995.
Split into simpler sentences: After Arturo García Buhr ended a romance with Tita Merello, Olivier and Buhr become a couple in 1950. Their relationship ended after Buhr's suicide on 4 October 1995.