The song "Red Eye" by Justin Bieber (Ft. TroyBoi) talks about a long distance relationship and the emotions that come with it. The song seems to be about a couple who are in love, but due to work or other obligations, one of them has to leave and take a red-eye flight. This leaves the other person feeling lonely, sad, and missing their partner.

In the chorus, Bieber talks about hopping on a red-eye flight, which means that he is taking a late-night flight. He says that he can "rest assured" knowing that his partner is waiting for him at the other end. The descent in the route refers to the airplane's descent, which is a metaphor for reuniting with his partner.

In the first verse, Bieber talks about how much he misses his partner. He says that his bed and pillow are "depressed" and "victims" respectively, which implies that he is feeling lonely and sad without his partner. He also talks about how he gets chills and sweaty hands because he is so anxious to see his partner again.

In the second verse, Bieber talks about how his partner is away for a few days and says that he's not going to sweat it. He misses her distractions and his touch is in distress. He tells his partner that she is just a plane ride away from his permanent visit, which indicates that he wants to be with her all the time.

Overall, the song "Red Eye" is about the feeling of longing for someone you love who is far away and how it affects your emotions. It talks about the excitement of being reunited and the sadness of being apart. It also hints at the difficulties of maintaining a long distance relationship and how it can take a toll on your mental health.