Inside Justin Trudeau’s sweet romantic Halloween

Katy Perry and Justin Trudeau are not hiding it.

The singer and the ex-Canadian Prime Minister are heating issues up, and now he’s dressing the half.

The web lit up this week after Trudeau, 53, posted a Halloween picture of himself in a shark costume, standing next to his 11-year-old son Hadrien, who was dressed as an injured surfer.

“Ready for Halloween with Hadrien!” he wrote, including, “We built the costume together – a little father-son Halloween teamwork.”

But followers have been fast to note one thing else, a shark go well with, a clear nod to Katy’s now-iconic 2015 Super Bowl halftime present, the place her backup dancers in shark costumes went viral.

While Katy’s been tight-lipped, she threw followers a bone at her London present on her Lifetimes tour.

“London, England, you’re like this on a Monday night after a whole day at work and a whole day at school?” she said from the stage.

“No wonder I fall for Englishmen all the time… but not anymore.”

Sources say the pair have been quietly courting since the summer time.

“They haven’t been able to spend a lot of time together as she’s on tour, but they’re constantly in contact — always FaceTiming and messaging,” a source told The Sun.