Ok idk if this is the place to post this. If not please direct me where!!!

So 6 months ago I moved outta state for work with a friend. Now me and friend have been friends for a long time. I knew it wasn't easy living/working with him. But I needed the job. Let me explain friend.

He's the type of person that always of negative nature. Like everything you say he answers, "ya but..." Insert something negative. And also he's quick to make you feel less then when you make a mistake but if he does same mistake and you say something his response is "ya but you make the mistake more then me" isn't a mistake a mistake??

And you never know his mood. I literally walk on eggshells. I hate it here but I can't go back to my home state. I feel stuck.

My question is how do you bring this up to someone who does no wrong.