Byron tells Aria (Lucy Hale) that his old flame Meredith — the college student who Byron had an affair with — got the job teaching at Rosewood High. That means Aria and Ella (Holly Marie Combs) will most likely run into her every day at school. Aria is rightfully upset, but her new mature attitude saves her from totally freaking out.
Check out the sneak peek below.
Catch an all-newepisode of PLL on Tuesday, July 31 at 8 p.m. ET/PT onABC Family.