Fans are convinced Justin Bieber sent Selena Gomez a “secret message” following her engagement to Benny Blanco.

On Monday — just days after his off-and-on ex of eight years shared the news of her engagement — the “Baby” hitmaker took to Instagram to post an up-close selfie of his wife, Hailey Bieber, kissing the side of his face during their trip to Costa Rica.

However, it wasn’t the photo that intrigued fans — it was the choice of song he included with the post.

Justin Bieber Instagram post with Hailey
Fans are convinced Justin Bieber shared the above Instagram post on Monday to subtly reach out to Selena Gomez following her engagement news.Instagram/@justinbieber

Justin and Hailey Bieber
Bieber attached the song “All My Ghosts” by Lizzy McAlpine to his post. The song speaks about haunting memories from a past relationship.justinbieber/Instagram

Bieber, 30, attached Lizzy McAlpine’s “All My Ghosts,” an emotional song about sweet memories with an ex from the past that the singer can’t seem to shake.

Certain lyrics particularly stuck out to fans. “I can see it now, the wedding of the year / I can see it now, he stands up there and wipes his tears,” the lyrics read. “I can see it now, when all my ghosts disappear / I can see it crystal clear.”

Other lyrics include, “Oh, all my ghosts are with me / I know you feel them too.”

Fans used the lyrics to push the theory that Bieber was cryptically trying to reach out to Gomez, 31.

Justin Bieber and Selena Gomez
Specific lyrics that stood out to fans speak about an ex getting married to another person.Kevin Winter/DCNYRE2010

Justin Bieber and Selena Gomez
Bieber and Gomez dated off and on between 2010 and 2018.Chris Polk/KCA2010
Commenting directly under the post, one convinced fan said, “Guys listen to that song well and you will know Justin is trying to give sel a message.”

A second quipped, “Of course he was gonna post something now 💀.”

“Y’all pls why did Justin Bieber post a pic of him and his wife with all my ghosts by Lizzy mcalpine a few days after Selena got engaged,” a third person tweeted. “you can’t make this up.”

“I don’t know if Justin is for real or joking at this point,” an additional seemingly perplexed user added.