While , they 're all arguing , Mia sneaks away .
Diego bumps into her , Mia tells Diego that the meeting is in the chemistry lab , and then Mia texts Maddie to meet him in the janitor 's closet .
While , they 're all arguing , Mia sneaks away , and Diego bumps into her , Mia tells Diego that the meeting is in the chemistry lab , and then Mia texts Maddie to meet him in the janitor 's closet .