First I want to say I'm very sorry you are having health issues that in its self is stressful enough....and then all this other stuff just compounds problem.
The thing the struck me was that he wants to date or go on dates while you are in the hospital or just home from the hospital ...I couldn't do that...my focus would be on the person suffering not on myself.... Not sure what he's thinking about but I know you are not wrong for how you feel right now. You need to concentrate on your recovery period. If his role can be positive and productive great....if not you need to create some distance. Take care of yourself.... D