My boyfriends mum has been diagnosed with breast cancer, which has now spread to the liver. 
She's been on medication but unfortunately they are not working so she may not have long left. 
My boyfriend is a very closed off person, he never opens up. He's always been quite a depressed person. So I really don't know how this is going to effect him. He's not open to talking about it, I have suggested therapy which he is not taking seriously. I think he's going to go very downhill without his mum. 
I also feel very selfish as I have a holiday booked in a couple of months and I am not sure if I should cancel it as I don't know how things are going to go. 
I don't know what the right thing to do is or how to help him. I feel very useless. 
I go to therapy myself, so been trying to get advice on how to help him but im finding it very hard as it feels like it's not helping.