What do I do?

So the guy I’m talking to is going through something, but he doesn’t want to talk about it. He’s been really sad and I think it has something to do with his grandpa.

I respect the fact that he doesn’t wanna talk about it but how do i be there for him without knowing exactly what’s going on? I’m not his girlfriend so I don’t wanna overstep my boundaries.

We’re together every day. I hug him, kiss him, remind him that I’m here for whatever he needs but I feel like it’s not gonna enough.

What else can I do?