Need help w relationship *long*

**sorry this is so long** I've been with my SO three and a half years now and things have been rocky the past week. His mom passed away in January and he quit a job he was at for six years last month. He hated his job so it was a good move but I think he's now afraid of what is in store for the future. He has a job at a coffee shop and is doing freelance work on the side. He was acting weird so I went over a few nights ago and he just seemed so out of it. Like he wouldn't talk to me about why he was pushing me away. He says he can't feel any emotions and that he just needs to be alone to cry about his mom. I get it. But I asked of he still wanted to be with me and he's like "well, what are you thinking?" And when asked if he was still into me he says he thinks so. We've talked about moving and now he says he may never want to. And it's just all weird and making me feel insecure. Like, he's not even trying to reassure me about our relationship. I'm afraid he's going to break up with me ..I asked his dad and he said he didn't believe he would do something like that because he feels we have too much invested in each other. Do you think he means it? How do you know when you've come to a crossroad? I want to be with him forever and idk if he feels the same way because he gets so vague and shuts down. Anyone else experience a rut in a long term relationship and gotten over it?