Guest wasn’t just in Mason and McKenna’s relationship—she was the third piece of it. And she was definitely not a secret. If anything, she was celebrated.

McKenna made sure of it. Her Instagram was filled with snapshots of Guest—sometimes candid ones, sometimes staged—and if Mason appeared in the photos too, the caption nearly always read something along the lines of “My baby girl and baby boy🩷”. To McKenna, Guestwas family, and she made it clear to the world that this wasn’t a duo, it was a trio. Mason followed suit, posting endless pictures of the three of them tangled up on a couch, cuddling in hotel rooms, or piled together after a long day on set. He didn’t shy away from showing his affection, either; fans often commented about how soft his smile looked whenever Guest was in frame.