i am gravely sorry to hear about your misfortunes with sleep. i truthfully do not understand, and you make me grateful for the sleep that i get, when most of my life i was not happy with it. i should try my best to reassure you that i don't think people see you as any less of a functioning person. it does add up very fast, i know, but in my eyes, it's nothing to feel guilty for. i'm sure your girlfriend would much rather have you getting the sleep that you need, and i sincerely hope that things work out with her. perhaps what you need is not to take her out to that dinner, but just to accept that she loves you the same either way. you're welcome to reach out to me whenever it gets hard to shoulder the burdens. maybe after a few conversations, i'll start to understand, and that's the most rewarding thing, isn't it?
take care of yourself, especially on the days it doesn't seem worth it. i'll keep you in my thoughts and i'll remember your name. best wishes..