can someone just help

My boyfriend has been acting weird recently. He keeps saying he's fell out with his mum massively but won't tell me what's going on. He was meant to see me Saturday but he didn't, same with Sunday and he didn't and same with today and he's now gone out saying he wants time alone. I've just given him the option to finish it and he just said he wants to be alone tonight I don't know what to do I'm absolutely devastated. I need some reassurance 🙁