Selena Gomez posted a sweet photo with DJ Zedd on Instagram while her former boyfriend Justin Bieber shared a glum selfie afterwards, Entertainment Wise reported.

The Instagram photo showed Gomes hugging Zedd from the back with the caption #IWYTK. Two hours after she shared the picture, Bieber also posted an Instagram photo of himself looking "unimpressed" while wearing a dark sweatshirt.

Gomez reportedly has the approval of her family and friends in getting cozy with Zedd. On the other hand, Beiber reportedly thinks that his former flame is just in a "rebound relationship." Rumors say that the "Beauty and the Beat" singer believes that Gomez will soon realize that he is still the one, according to Hollywood Life.

An insider revealed that Bieber is still in the denial stage and he is pretty confident that his ex-girlfriend will eventually go running back into his arms.  Other sources reported that although the Canadian star is acting like he does not care at all, he is actually affected deep inside.

If the speculations about Bieber's real feelings are true, he might have to endure a lot of pain in the coming days. Gomez just announced her collaboration with Zedd on Monday entitled "I Want You to Know." One Republic's Ryan Tedder said that the track will be out before the month ends, Daily Mail reported.

Tedder revealed that Zedd "crushed it" and Gomez "did a bang-up job." He added that he listened to the song several times on his headphones.

An insider close to Gomez commented that the "Come and Get It" singer is happy with the music producer. The rumored couple is reportedly enjoying their time with each other. Gomez's friends who have seen her throughout the on and off relationship with Bieber are reportedly a bit concerned with her newfound romance but they are glad that she is over her ex-boyfriend.

"I Want You to Know" by Gomez and Zedd will reportedly be released on Feb.22.