Eminem and 50 Cent are close friends and regular collaborators, dating back to the "In Da Club
" rapper's debut album, 2003's Get Rich or Die Tryin'
. "Is This Love" is one of two tracks recorded by the pair in 2009. The other, "Psycho
," finds both rappers adopting Em's Slim Shady persona. That song ended up on 50's Before I Self Destruct