Is It Bad To Not Care Anymore?

My husband is notorious for doing what he wants, when he wants. Seeing who he wants, and pretty much telling me to fuck off if I complain. I'm sure if the foot was on the other foot, he wouldn't be as accommodating as I am. It used to really get me upset, especially when he would go to dog shows (to which I either wasn't invited or at a time when I couldn't get off work) and meet up with this woman. They talk on the phone and text a lot, supposedly about dogs. It is probably just innocent, but it still sticks in the back of my mind that something more could be going on. With that being said, it seems at time passes, I become more lethargic about the whole situation. I won't say that I don't care, per say, what my husband does, but it just doesn't bother me like it used to. This past weekend he went to a dog show that was 14 hours away. Well, there was no way I could take that many days off work, so I stayed home. He was gone for 5 days total. I was completely relaxed while he was gone. I did what I wanted to, I even managed to read an entire book. Am I a bad person for not really caring that he was gone, and with his dog "friend" woman at that? I'm not sure how all this makes me feel.