Is AUTHOR wrong in the post ? POST : Me and my housemate own two types of cereal that are very similar. Even the packets have very similar designs with similar images and colours on them etc.

A couple weekends ago I was out with friends and really overdid it. I don't remember most of the night or coming home, but when I'm that drunk I get the munchies. 

Woke up the next day with a raging hangover and that feeling of "oh shit, I hope I didn't do anything stupid". Turns out I sort of did... I ate my housemate's cereal instead of mine and made a mess of the kitchen. 

So I'm in the kitchen cleaning up and my housemate comes in along with my two other housemates. I tell him that I was out the night before and I accidentally ate his cereal, apologised and offered to pay him back/buy him new cereal. He loses his shit, calls me a thief and an asshole etc. Other housemates are just standing there awkwardly and staring at me while this is happening. I decide the best thing to do is to just leave and let him cool down so I walk down to the shop and buy him some new cereal plus some chocolates. I leave it outside his room with an apology note.

Next time I see him he's sitting at the kitchen table working on his laptop and I ask if he got the cereal and chocolates and he replies, "Yeah thanks" without looking up. Doesn't say anything else or otherwise acknowledge that I'm there so I just get food and leave. I figure he's still pissed at me and he'll hopefully cool off in a couple of days.

Now it's been nearly two weeks and he's still giving me the cold shoulder. When we run into each other he doesn't acknowledge me or even make eye contact, and replies with abrupt one word answers if I talk to him at all. The atmosphere in the house is awkward, my other housemates don't really seem to know how to react to the situation. Tbh it's bringing me down a little especially as we got along well before the cereal incident.

Tl;dr went out with friends and got too drunk, came home and ate my housemate's cereal. Apologised and replaced the cereal but housemate is still angry.