I’m a fourth year college student, male, I have two roommates, both male. I have been living with my first roommate, whole I’ll call Bill, for about two years. The third roommate is new and doesn’t factor into the story too much. One of my roommates has been talking about wanting to get a cat. 

About a year or so Bill wanted to foster cats. I did not want to. I love animals, but I’m a fairy busy college student and I did not really want to responsibility of taking care of pets at the moment, and I also didn’t really want cat hair all over the apartment. (The furniture in the living room is all mine.) 
He said he would take the full responsibility of taking care of them, I eventually relented. 
I ended up almost always cleaning litter box and feeding them, which he promised I would never have to do. Our house and furniture were covered in hair from the cats, which to some people may not be a big deal, but I am not used to having pet hair everywhere and it really bothers me. My mother gave me a very nice, expensive couch for the apartment, and the cats would scratch the shit out of it. His dumbass friend would always come over, they’d get high, and they’d hike the cats between their legs like footballs. It terrified them but they were convinced “the cats like it, dude.” He also had a hamster, which he would forget to feed for literally weeks on end, and never paid any attention to, that ended up dying. 

Especially over the past year, I’ve been having a lot of issues with him and his behavior. I’m not sure if elaboration is necessary but I can edit and add if people want more context to our relationship. Every month or so it seems, he’ll do something that puts me off and makes me really question my friendship with him, but I just end up letting things slide. 

He told me maybe a month or so ago he wanted to get a cat. I said no. He was insistent, but I put my foot down, and explained to him why I don’t want a cat and why he isn’t fit to own one. He said he’d just get one behind my back, but he was laughing so I assumed he was joking. 

Yesterday he texts me a picture of the cat he had gotten. I was angry, I considered a huge backstab. He told me 
“I never said I wouldn’t get a cat.”
“I can just keep it locked in my room, you’ll never have to see it.” (Which I don’t believe, but if I did, I feel like it’s not right to keep a cat locked in a single room.) 

I tried to explain how getting a pet is a group decision everyone in the house needs to agree on, but he does not get it. He never ended up coming home from the shelter with the cat, but he’s been sulking like a child and giving me the cold shoulder. Which is his normal behavior when he’s mad. 
Does he have any right to be angry with me? And did I overstep boundaries by forbidding he get the cat? 


Sorry for this long ass post. 