Flipping Not Allowed

I had been dating this amazing guy for a month or so. Our whirlwind romance had me falling madly in love. One night, he invited me over for a BBQ but my mother was visiting. He insisted I bring her along, which I did. He was super-excited when we arrived and tried hard to impress her. When he took a break from the grill to grab something from the house, I decided flip to the meat on the BBQ. He came back and screamed at me: "What are you doing! You are so controlling! Why can't you let me be the host!" Then, he stormed off, leaving us speechless. I went to look for him and found him curled in a fetal position staring into the void in his bedroom. I could not get a response for him so I went back to my mother. We sat there and wondering what to do. I was sad, disturbed but also amused, especially when we decided to eat some of the meat since we were starving. The next day, he called apologetically and said he should not have been drinking while on his medication. Needless to say I had no idea he was on meds. I guess the paranoid behavior should have tipped me off - he kept a samurai sword under the seat of his car and had a panic button installed in his bedroom. If my mother had not been there, I might have rationalized this and forgiven him. But because she was, there was no going back.