Shawn Mendes has reflected on his new “reality” following his split from Camila Cabello.

The Treat You Better singer took to Instagram on Friday to share his thought process behind the lyrics for an upcoming track, which is said to be about his ex-girlfriend.

While playing a few piano keys, Shawn said, “A lot of (things) that also resonate in the lyrics for me are, like, ‘Oh f**k.’

“You don’t realize, for example, that when you break up with someone — and you think it’s the right thing to (do) — you don’t realize all the bullshit that comes after.”

Shawn and Camila, 25, announced their separation via a statement posted on social media last November. However, in the song, the Canadian hitmaker indicated that he felt a bit lost without the Havana star.

“Who do I call when I’m having a panic attack? Who do I call when I’m, like, f**king, on edge?” asked the 23-year-old. “And I think that’s the reality that kind of hit me. ‘Oh, I’m alone now.’ Now I feel like I’m finally alone, and I hate that, you know? That’s my reality.”

Along with an outpouring of support, fans called for the song to be released as soon as possible.

One commenter wrote, “Okay but…drop the song, Shawn. I’m ready to cry.”