And there's more. Despite the 2-month relationship, Selena never uttered a peep about it to Gigi, who's her best friend. Gigi and Bella found out about it when they saw the pics on TMZ. And that's when Bella unfollowed Selena on Instagram.
As one Bella source put it, "Giving Bella and Gigi a heads up would have been the respectful and honorable thing to do ... but I guess that's just Hollywood."