Keep your head up, there is no shame in sharing your burden with friends and we are your friends.
Be there for your parents like you are now.
I am a firm believer that the pain we feel when a loved one passes (as great as it is)is more than made up for by the joy that they brought us.
Accept and deal with the pain and try to focus on the joy he brought into your life.
In the last year I have lost 2 dogs and 2 cats and I know the joy they brought me will never be forgotten.
I will keep you and your parents in my thoughts.