A warm welcome to our forum. It's great that you have met someone you feel you have such a deep connection with and with whom you can have great conversations. It sounds like you have been finding it hard to talk about your mum's cancer diagnosis and to bring this up even with your best friend. Perhaps you've needed time too to process all this but it seems that you now feel ready to talk about it with him and that you know that he would be there for you. It would also help him understand why you are finding things difficult on some days. I hope that you will hear from some of our members who have been in a similar situation and that they will tell you more about how they managed to bring it up. Of course it would be a lot easier to talk about it when you see him in person but as you haven't been able to see one another for months because of the pandemic, you might have to talk to him via video chat or whichever way you feel most comfortable with. And I am sure that you will find the right moment to talk to him about it when you feel ready to do so and to bring it up in the most natural way especially as you seem to communicate really well and you mentioned you talk about all sorts of things.
It's great that you have this person in your life at a time when you need it the most and I really hope that you can manage to see one another in person when it is safe again to do so.
