Grey's Anatomy is back in full force this week, and many of our favorite couples are on the rocks. Alex and Jo are falling apart, especially in light of the potential plea bargain that could put him in jail. We have hope for Jackson and April's reconciliation, but maybe we're just deluding ourselves. And don't even get us started on the messy love triangle between Meredith, Riggs, and Pierce. All of this kerfuffle is bringing us back to the good old days, when Derek Shepherd was still alive, and he and Meredith were the best couple ever. Let's remember why they were so perfect together.