Your Father Is From Another World

When I moved out of my parents' house a little over a year ago, I thought everything was okay. Now my mother is leaving my father, and everything is falling apart. It's not my mom I'm angry with, though, it's my dad. I don't get him. I mean, he was one of those dads who missed my brother's game and my school play because he was working. We all just got used to that. But now he's not working so much, and I can tell how lonely my mom is. He just disappears into his den and she's miserable and he won't change. She said that even when she said she was leaving, he didn't tell her he needed her or ask her to stay, he talked to her like she was a child trying to run away from home. I don't understand my father, and I'm too pissed off to talk to him. He's going to be lost without her. Why can't he just admit that?