My boyfriend won't take his Freddy Fazbear costume off

My (24f) boyfriend (25m) will absolutely not take his costume of Freddy Fazbear off. I do not know much about Five Nights At Freddys, but I know he loves it and has loved it for as long as he can remember. A couple of weeks ago, he bought a costume of the bear character "Freddy" so he could wear it to the Five Nights At Freddys movie. When he bought the costume, I was happy for him as it made him happy, but now it's a nightmare. It was a couple weeks ago at night, I was in the kitchen making pasta, and suddenly Freddy Fazbear came and hugged me from behind. I screamed but he told me it was him. I sighed and told him not to do that again. The next morning, I saw Freddy in our bed next to me. I asked him why he didn't take the costume off to sleep, but all he replied with was "or or or or or" which confused me, but, whatever. I went to work and came home and he still had it on. I told him he should probably take the costume off but he ignored me. This went on for the next couple weeks, with me telling him to take it off but him ignoring me or replying with "or or or or or". He has not taken the costume off even once. It smells absolutely rancid. The costume smells like a mixture of sweat and feces. I think he went number 2 in the costume once or twice. He will not speak to me. All he will say is the stupid "or or or or or". I cannot take this anymore. He went to see the Five Nights At Freddys movie yesterday, and afterwards he finally spoke to me. He told me nobody would sit within 5 feet of him, but he still will not take the costume off no matter what. I told him I will leave him if he didn't take it off, and that I cannot handle our bed smelling like Freddy Fazfeces anymore. He still refused. I am now living in a small old apartment 25 miles away from our Freddy Fazbungalow. He will not text me or pick up my calls. I don't know what to do. I fell in love with my boyfriend, not Freddy Fazbear.