Am I wrong for reacting the way I am?

My boyfriend recently lost one of his good friends (about 2 months ago). I've been super supportive and always ask him if he's okay and if he wants to talk, for the most part, he'll just responded with "I'm sad". When I ask him to explain more, he doesn't. He used to go visit the kids family like 2-3 a week, but now he goes every single day from noon until Eleven. I feel like it's really unhealthy. Anyways, I asked him to start coming around more and he got kinda upset saying that his friend died and how dare I pretty much. We only see each other maybe three days now, if that, and most of the time he cuts it short to go see the kid's family or to just hang out at his house. We used to spend the night together on weekends, but now he tells me he doesn't want to. All he wants to do is stay in my house and cuddle and I told him that I'm bored of that. I that I'd like to get out every once in a while. With which he responded with, "I never feel like doing anything." But he does things all the time with the family. Yesterday he told me he was running around with the mom all day. I'm pretty upset over it. I'm starting to feel like there's more going on, but maybe I'm just being insecure. I don't know, what do you guys think? Did I react wrong? And what should I do now?