Justin Bieber is reportedly replacing Selena Gomez with Kylie Jenner on a song that he never got to finish with his on-and-off-again girlfriend.

According to Celeb Dirty Laundry, the Canadian pop star supposedly wants his new music with the reality star to overshadow his former lover's latest single "I Want You to Know," which she recently released with her rumored new boyfriend Zedd.

"Justin is going to finish the song that he and Selena started together," a source revealed. "He has already been in the studio -- he is trying to fast track everything and get it out ASAP to steal some of Selena and Zedd's thunder."

"He has been talking to Kylie Jenner about it. She has been begging every musician she knows to get in the studio with them," the source added. "Justin knows Selena despises Kylie and will freak out if she hears the 'KUWTK' star on her and Justin's work."

Meanwhile, "The Heart Wants What It Wants" singer and the EDM star are reportedly planning to appear on several popular television shows together to promote their hot new collaboration.

"Selena and Zedd are trying to get on 'The Voice,' 'American Idol' and 'Dancing with the Stars,'" an insider told HollywoodLife.com. "Things are moving forward on that, but nothing is set in stone."

Moreover, the new couple is taking their relationship to the next level, as they are apparently considering getting matching tattoos to show commitment to each other.

"Selena and Zedd want to get matching tattoos," a source claimed to HollywoodLife.com. "They want to get something really classy and creative."

The source added that Selena Gomez is the one who suggested the idea: "The whole tattoo thing was actually Selena's idea. She just feels like she's gone through such a rebirth in her life and she has Zedd to thank for that."