I'm very confused myself, so I want to hear some other opinions too!!
I was a huge makorra shipper before the series started, just because Mako is awesome I guess. But I don't anymore because well I feel like he screwed things up majorly with Korra, but I don't like his thing with Asami either, so I don't ship them. I dunno, their whole lovey mushy thing bothers me. I feel like it won't last like that. So for a while I was like MAYBE I SHIP BOLIN AND KORRA! Because Bolin is really sweet and treats her how anyone should-- he loves her for her and loves to have fun with her and hang out.
And then... enter Tahno. I found him quite despicable