Throughout season three, we see Andrew show his endless support for Mia. The high school jock accompanies her when she goes to meet her biological mother and isn't subtle when expressing his skepticism at her mom's inadequate apology and empty promises.
He later arranges the FaceTime session at the hospital after seeing how upset Mia is having to miss an important moment in her half-sibling's life. He doesn't think twice before skipping out on a big basketball match where college recruiters are in attendance and, instead, hops on a plane with Mia to meet her newborn brother. When Mia tells him about her plans to relocate, he shows nothing but support and makes it abundantly clear that Mia is his future as the high school sweethearts agree to go the distance.
