Why did bro start complaining about her not doing Housechores 💀

As far as I understood it, they talked about dividing the chores, so both have to do some things but he was seeing she wasn't doing her part. This is important, I think. If you live together, you need to do your part. A lasting relationship depends on more than sex. Other series don't show it this much, I guess...

because its laziness. no one would like it if the other wasnt doing what they were supposed to do. though its more disrespectful then anything.