Mike in season 4 (spoilers)
I just finished season 4 and I keep thinking back to Mike. Something rubbed me the wrong way about his reaction to Fiona lying and cheating with his brother.
I would expect him to be pissed and cut her out of his life, sure. At first, I was upset with Fiona (I know, just a TV show, but Emmy Rossum does an awesome job and I get invested in the character). I liked Mike and felt bad how she seemed to sabotage her relationship with him and her position at her sales job.
But Mike didn't just leave the relationship. What she did was obviously wrong, but she was acting like an addict, was a nervous wreck, hated herself, etc. She came from a messed up background. He came from a cookie cutter suburban family that still has nice dinners and goes to baseball games. Mike didn't know her world. He pushed things with her, which seemed sweet at the time, but when she messed up, he was not only done, but almost cruel and gloating. I almost feel like he bailed her out as a gesture to posture himself above her, yet again. He can't get control in his relationships, therefore he likes to feel morally superior and play the white knight before he says, "I'm sorry a hard working, functional guy like myself isn't good enough for you," and "Send me the money, I never want to see your face again." Dude, I get it. She broke your heart. But man up and don't treat her like human garbage. He looked at her like she was a dog. No retrospect, it's good they didn't work out. Mike was insecure and should have been a lot more pissed at his own brother than with Fiona.