Unfortunately, my boyfriend of almost 6 years (living together for 5) seems to be like this. He gets angry when I don't go out or do things with him after getting sick (gluten or dairy ingestion) and complains that "everything" sets me off. Just yesterday while walking the dog he suggested that perhaps it wasn't the food that was causing my symptoms and that's just the way I am. Despite the physical evidence (which I photograph for future documentation), he still questions the validity of it all! Just today he got upset that I didn't go to the gym with him, as I sit here typing with a hot water bottle on my abdomen.
In addition, I have been diagnosed with Asperger's Syndrome and he even gives me a hard time about that. He doesn't understand why I just can't understand social situations and cracks "retard" jokes all the time. Note: I have two older siblings with autism which he jokes about all the time as well. Unfortunately, his brother and mother are no better. Only the father seems to be sensitive to these types of "invisible disabilities," probably because he has food intolerances himself. Unfortunately, the family criticizes him for being a "hypochondriac."
I remember years ago my grandfather mentioned he had troubles digesting cilantro and to disprove this my mother switched the parsley one night with cilantro and didn't bother telling him. She said the fact that he didn't react means he was full of B.S. I worry that one day someone will "test" my gluten and dairy sensitivities the same way.