Selena Gomez and Justin Bieber have a complicated past. The two used to date during the early days of their careers. Despite writing songs about each other and how on and off their relationship was, the two have officially moved on. Justin Bieber married Hailey Baldwin and Gomez has dated around. While the romantic feelings are no longer there, it doesn't mean there's no tension between them. According to PopCulture, fans suspect that Gomez shaded him while both were aiming for Billboard's No. 1 slots.