Why Did Emma and Peter Break up?

Emma becomes frustrated with their relationship and betraying Manny's trust. They have a fight while Peter wants to keep their relationship a secret. Emma blows up at him revealing that she is in fact not okay and has a lot of issues going on by herself.

Does Emma find out Peter planted drugs in Seans locker?

It doesn't take Emma long to figure out that Peter was the one who planted the drugs in Sean's locker. Disgusted and furious, Emma confronts Peter and demands that he tells her the truth.

Why did Emma and fiance break up?

The source continued, “Emma understands his work anxieties—it's why she originally pulled out of Cabaret last year and only did it this year—but they're taking a break from seeing each other. They're both a slave to their schedules. This time last year they were privately discussing marriage.”