Okay well this is the first time I did a soapbox, so yeah... and cuz i wrote too much English essays at school, u might find this very 'essay-ish' and formal, but i'll try to prevent doing that.
Okay now, Merder is my favourite couple on Grey's Anatomy, they're cute and sweet together, but how come they can't be together and have a stable relationship???
I think there're many reasons to explain this. Like for example, at the start of the series when they just met and Derek was chasing Mer, they seems soo in upendo and happy- until Addie showed up as Der's wife- which i believe has damaged Mer very deeply on the inside, and that's probably why Mer's finding it very hard to trust him again. Then, Derek 'moved on' with Addie and it took Mer a while to finally get over him and tarehe Finn, however when the MerFinn relationship was just about to start, Der found out- which he wasn't very happy about because that means Mer has moved on without him. So he called her a whore- and that was very damaging to her as well because REALLY, she didn't do anything wrong that deserved to be called a whore.