In a mixtape called Bye Felicia, the sixth-season American Idol winner made some changes to Drake's track "How Bout Now," and it seems to take a shot at Derulo for changing because of fame, E! News reported.
"Feeling like I have to get all of this off my chest. I know you are sitting there thinking 'What is she going to do next?' Remember I deleted all my other guys' numbers out my phone for ya? Remember when you broke your neck and I had to wash your back for ya? You probably don't remember half of the sh-t that I did for ya," Sparks sang, according to E! News.
Derulo broke his neck in 2012 and Sparks reportedly stayed at his side during the long recovery process, offering him support and aide.
"You thought you had it all figured out back then boy, how 'bout now?" she continued."'Cause I'm up right now and you suck right now. You thought that little effort that you put in was enough boy how 'bout now?"
In the song, Sparks reportedly said Derulo was "mommy's little angel" before his "head blew up [and] then you started changing."
"Can't believe all the things you started saying, like I'm with you for your fame and your name... Don't blow up my phone calling complaining, boy you tried it once."
The pair decided to part ways a couple of months ago after dating since September 2011.
Derulo, 25, told Ryan Seacrest on his radio show in September that it wasn't exactly an "amicable" split with Sparks because there was barely any contact.
"I wouldn't say [we're on] good terms... but it's not a bad situation. There's no bad blood. We didn't end off on a weird way or a negative way," he said, Us Weekly reported at the time.
Derulo explained there was a lot of pressure on marriage and they were arguing too much to the point where they were having more bad times than good. While their relationship grew to become "unhealthy" and somewhat of an "obligation," Derulo insisted to Seacrest cheating had nothing to do with the break-up.