He looks awful

Hey all! I saw my STBX at a support hearing recently. He did not even acknowledge me or even look in my direction and we sat right across the hall from each other. He looks like he has aged 10 years in 6 months. I mean awful. Does anyone have any insight as to why he would not look at me or speak to me? We were in the hall for 2 hours. I’m not sad about it, I’m just wondering what the heck? That is not normal behavior. We were married for 27 years and have 4 adult children. Its just more strange behavior. Maybe its better for me? Don’t know why I would expect anything “normal” from him 🙂