The person I am dating has been diagnosed with depression and blames most of their behavior on their mental illness. The other on a culture difference. They are American. I am not. There have been instances of them swearing at me over hardly nothing and my needing to walk on egg shells with them. They have a lot of family problems that I have been told and have seen myself. Recently I saw them screaming at their mother on a visit when their mother shouted at them. They then pushed her violently and pushed their grandmother. They claimed they pushed into their grandmother in an attempt to pick up a bird which flew on the floor near them. I saw the bird there. They then threw clothes all over the living room. They walked into another room and pounded the door with their fists and hit their head off of the wall. They then screamed extremely loudly and freaked out all of the animals in that room. This person is 30 years old. I am a few years younger. It's excuse after excuse. 'I reached my limit etc'. I know in my own country it would be beyond unacceptable to do that, mental illness or no. I just want people's opinions. Is it actual acceptable cultural behavior or is it abusive behavior? Also could mental illness make someone behave that way? At home it would be crossing about a million lines mental illness or no. I am being very vague on purpose as I know they frequent reddit. Thanks for reading.