My boyfriend is grieving .

About two nights ago he started to act really distant and weird and we're going through some family issues already so I figured it was the stress getting to him and he needed space so didn't bother him. All day yesterday we didn't speak except when I asked if we were still doing then picnic we planned and he said yes it's still a plan but Shut down again right after that. I'm starting to feel lonely at this point and wondering wth did I do cause he's never done this to me before. So before bed lastnight I asked him if he's okay and why he's so distant he said its nothing that has to do with me and I said okay. I had a hard time falling asleep but crying myself to sleep helpped because he's never treated me like this before. And he won't actually tell me what's wrong . This morning I woke up and he wasn't next to me so I was getting out of bed to go look for him and found him curled up in the corner sleeping on the floor. I started crying and asking him why is he doing this and why Won't he tell me what's going on in his head but he still wouldn't talk to me. So I left him alone. Two hours later around 10 am I went and made breakfast and I actually brought it to him and told him he should eat something. He still hasn't eaten it . Not even a bite. Just sleeping and I still don't know why. Until about 30 min ago his mother texted . She texted my phone because she lives in a foreign country and his phone doesn't have the app that she uses to communicate . I told him his mom texted hoping he'd ask to speak to her but he didn't. So I read the messages and it was a picture of a boy she's saying passed away. IDK who the boy is or how much he meant to my boyfriend but I know that this is what's killing him right now. And I want to do something to help. IDK what to do. He's clearly the type that just wants to isolate himself so do I just let him grieve alone in peace. Or offer him some type of advice , or is there anything I can do to help him get his mind off of it. I feel bad.