The pair were liking each other's posts, commenting cute emojis on each other's photos and Jacob even sent Millie a cute teddy bear toy, fans immediately started to assume they were dating.
And it looks like they were correct.
Millie took to her Instagram Stories to share a very cute and lovey photo of herself snuggled up to Jacob, with three love heart emojis on the screen.
She dated the photo to be the 31st of December, on New Years Eve, when Jacob was hanging with Millie's family at Disney World in Orlando.
#CONFIRMED. Can you even deal?
Just take a look at their flirty social media exchanges below...