Hailey Baldwin and Justin Bieber are pretty guarded about sharing details surrounding their relationship but a recent Instagram comment has proved that they’re secretly just as playful as most couples out there.

The world was blessed with an insight into their engagement when a man called Nathan Finochio – a pastor at Hilsong Church where Justin and the 21-year-old are regular attendees – shared an image of the soon-to-be-married pair from behind.

Instagram royalty Comments By Celebs soon spotted that Hailey had posted a loved-up message beneath the shot that well and truly proves she’s the biggest Belieber on the planet: “Idk who the boy on the right is but he looks FINE from the back,” she wrote.

For anyone who closed their eyes last month and forgot to open them again, the duo became engaged on a trip to The Bahamas in July, with TMZ reporting that "everyone was at a restaurant on the property doing salsa dancing when Justin's security told everyone to put their phones away, because something special was about to happen.”

The pair have recently hinted that their marriage will be taking place sooner rather than later, with Justin responding to a paparazzo’s question about his work schedule with the comment: "What's next? Getting married.”

What we know about the wedding so far is that Hailey's sister and cousin have already been asked to be bridesmaids and that the duo are opting for a more “intimate” ceremony rather than something that fits the usual glitzy Hollywood brief.