"Me and Jada have been best friends since we were younger and I'd do anything to make her happy," Mikayla told BuzzFeed News.
"We're basically sisters," Jada echoed.
On Saturday night, the two friends had a sleepover.
"I thought my boyfriend was out with another girl," Jada said. "So I came up with the idea of [Mikayla] dressing up as a boy — so that it looks like I had another boy in the room with me."