"Everybody in her circle knows they've been together this whole time."
Another insider says it's become "pretty serious," adding her mom basically thinks he's part of the family.
I'm calling bullshit. Miley seems like she'd have NO problem showing off her man if she had one. Besides, her life is documented by the hour on social media. We'd know by know if Mike Will Made-It was in the picture like that. Then again... look what happened when she was so public with Liam Hemsworth.
Drive my heart into the knife!