Yeah, I agree with everyone, Try to stay positive about it all, It will be hard enough for him as it is so smile when your around him, If he sees you upset this could make him more upset about it all, If he see's you smiling he should smile aswell, Obviously you're not going to seem happy about it all, but just smile. My dad died of cancer when my mum was 6 months pregnant with me, So obviously i never new my dad but times were still very hard for my as a child and still can be sometimes now, It was when my other friends said things like "My dad's taking me to the park to play football saturday" id be like like "oh", You soon get used to stuff like that, and you jsut have to live your life as normal as possible. Hmm the first sentence in that last paragraph might not have been the best thing to say, But 15 years on from when my dad had it, Lots of things have changed, So try not to worry about it too much.