Aside from posting a few group clips with Justin, who also goes by the nickname Blue, her new fiancé has been completely absent from her social media, making the surprise engagement a shock to some fans

Sharing an adorable photo of the proposal, she wrote in the caption: ‘Happy birthday my sweet blue.

‘Doing life with you these last years has been an indescribable whirlwind and i couldn’t dream of anyone more perfect for me to do it all with. thank you for letting me be yours. i love you.’.

But who is Justin Long? Here, MailOnline rounds up everything you need to know about Paris Jackson’s bandmate turned partner..