At the end of series one, Tix collapses due to overexercising and restricting her calorie intake, which resulted in her heart giving out. It is revealed at the end of "Alarm!" that Tix is dead.

What mental illness does Rae have?

Earl, 45, is probably best known for her darkly comic memoir, My Mad Fat Diary, which details her experiences as a teenager stricken by extreme anxiety and obsessive compulsive disorder as she attempts to navigate everyday life in her hometown of Stamford, Lincolnshire, after spending time on an adult psychiatric ward.

Did Finn cheat on Rae?

Though in the series finale, Rae conquers her fears of intimacy and the two have sex for the first time. After trying to cope with Rae's emotions, Finn mistakingly kisses another girl, cheating on her.