So frustrated with him and don’t know what to do!!!

Been hanging with this guys for months now. We’ve always done everything together. I’ve met all his friends, gone on trips, everything. I’ve even gone with him to job interviews and tests. A month ago his attitude changed for the better. He started being more affectionate and even told me we’re taking this step by step and building trust. That lasted like 3 weeks. He started to not talk to me as much. We hung out twice last week and he even slept over. Today I messaged him asking if he wanted to do anything. He never responded so u texted him hours later asking what was happening, as I normally do. Right after I got a call saying a family member was on life support. I texted him saying nvm and why. He said he’s sorry to hear that. I texted him back saying I am too and maybe if things get better we can do something tomorrow. I double texted after that asking how a job thing went for him today. And nothing. Idk what to do. He completely changed within 5 days. I’m scared to even text him tomorrow to ask because I don’t want him to ignore me. I’ve just hung out with him almost every day I’m not working and now that I’m not it’s weird, I feel lonely, and I’m scared of what he’s doing. Idk if I should text him tomorrow and what, because I’m tired of hot and cold, but want to see if this will even go anywhere without giving up. Help!!!