Chatrbee...being a caregiver is tough. It takes a little bit of hardening your heart and stiffening your backbone to make it through just a normal day. We sometimes walk around with a bullseye painted on our foreheads but that is because our loved one knows and believes in our unconditional love for them. No matter what, your dad believes you will be there for him. And you will. But, (there's always a but, huh?) you have to draw a line in the sand and let him know that crossing it is taboo. It sounds like you have done this already. Just keep the line there and if you need to walk away, do it. He will get the message.
He ATE AN ENTIRE HALF GALLON OF ICE CREAM IN 4 HOURS on sunday!