Andy and Angela - The Office
To be fair, this relationship was horrible for a lot of reasons, but there was no excuse for Angela's behavior. She should have just ended her engagement to Andy, rather than cheat on him.
Wade and Zoe - Hart of Dixie
Zoe deserved a lot better than what Wade put her through, but fans didn't seem to care. For some reason, everyone was still completely on board with this relationship and treated Zoe at the villain for being hesitant to give him another chance.
Sam and Annalise - How To Get Away With Murder
In this case, both Sam and Annalise were cheating on each other. This was in no way a healthy relationship or one that fans were meant to root for.
Schmidt and Cece - New Girl
We do have to admit, that we still love Schmidt and Cece despite everything. But we can't condone what Schmidt did when he was stuck between Cece and Elizabeth. The couple would have been a lot purer without the unnecessary road bump.
Madeline and Ed - Big Little Lies
Ed is the best male character on Big Little Lies, and always has Madeline's back. He loves her deeply, which is what makes her cheating on him so painful and undeserved.
Blair and Nate - Gossip Girl
It's still crazy to us that Blair and Nate even tried to get back together after everything that happened between them. Not only did Nate cheat on Blair, but he cheated on her with her best friend.