Why am I suddenly irritated by my roommate?

My roommate and I hit it off when I first met him and we would have good conversations but he’s starting to annoy me and I don’t know why. One thing he does is be in a lot of people’s business and then comes back to me and talks about it and that stuff kind of rubs me the wrong way because I’m not like that and it makes me wonder if he’s doing the same when it comes to me. Then small stuff that annoys me like changing the channel on the tv not asking me if I’m watching. Hogging the remote and watching the same movies over and over again while hogging the remote. Then we weirded me out and I caught him looking towards my private area when I was walking by. Overall I don’t have a problem with him but he’s just sort of annoying to me now. And I don’t want to get into with him down the line. I do know sometimes when you have unknown problems with someone it’s because they sort of mirror your actions back to you and you’re not aware. I’m just looking for advice on how to basically take a chill pill and mature and grew through this situation without having fall outs with people.

Why am I suddenly irritated by my roommate?
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