Season three already starts out with a strain on Archie and Veronica's relationship. Veronica is fighting hard to keep Archie out of jail, but Archie ultimately decides to plead guilty to Cassidy Bullock's murder. That might only make things harder on their romance. For the time being, the two are just trying to get through everything together. That being said, Camila Mendes, who plays Veronica, has already confirmed that Veronica and Archie are going to hit a roadblock in their relationship, and apparently that roadblock might involve one of them being with another person.