Bebe Rexha co wrote which 2013 Eminem hit? 
Bebe Rexha:  She also co-wrote the chart-topping Eminem and Rihanna single "The Monster", among others. The Monster (song): "The Monster" is a song by American rapper Eminem, featuring guest vocals from Barbadian singer Rihanna, taken from Eminem's album "The Marshall Mathers LP 2" (2013).
The Monster