Friends reactions/support

This goes out to anyone who has a friend that knows. I live at home still and my family has no idea. I struggle with reaching out so I’ve been trying to be more open (I don’t go into detail about purging but every now and then I’ll mention it). Last night my friend asked about my day so I said it didn’t end very well because I did too many triggering things throughout the day (ate from my school cafeteria for lunch and dinner etc). And he asked what I meant so I was honest and said it ended up with me purging. His response? “Ah damn”. That’s it. I’ve had food problems for 5-6 years, bulimia on and off but on for 1.5 years now and he’s never once asked me about it and we talk about personal things all the time. He also knows I struggle to talk about it on my own. I know it’s not easy, but I’m not expecting much. I’m in therapy so he doesn’t need to feel like he has any responsibility or anything but it feels like he doesn’t care. And I don’t want to talk to him about it because I want it to come from him, not just cus we talked about it yk? Has anyone had any similar experiences?