The relationship between Olivia Baker (Samantha Logan) and Spencer James (Daniel Ezra) is one of the sweetest parts of All American, and they break up for a tragic but important reason. Spencer meets Olivia, the twin sister of Jordan (Michael Evans Behling), when he begins attending Beverly Hills High School in season 1, and the couple becomes close friends before admitting their feelings in season 3. In season 5, the characters attend Golden Angeles University, with Spencer playing football and Olivia working for the LA Tribune, which she hopes will help her future reporting career. While there are many romances on the show, these characters truly understand one another.
https://screenrant.com/all-american-why-olivia-spencer-break-up/