ORLANDO Bloom has taken a cheeky swipe at ex Katy Perry's "flirty friendship" with Justin Trudeau in a catty Instagram comment.

It comes just days after The US Sun exclusively reported how the politician was spotted at Katy's Montreal gig - amid fears from her pals over her new connection.

Teenage Dream songstress Katy , who is single after recently splitting from her movie star fiancé Orlando , 48, is on tour in Canada and had dinner with divorced Justin - the former Prime Minister of Canada - on Monday evening.

He was seen beaming in photos published by TMZ as he chatted to the mum of one while dining at Le Violon restaurant in Montreal .

On Wednesday night, fans then caught him in the crowd singing and dancing at Perry's concert at the Bell Centre a

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