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I do understand that mindset from a personal level as well, but it's definitely not healthy. It's gonna subtly bleed over into your real life perception, and it'll make a lot of media unenjoyable for you. I think for me at least, a lot of this mindset comes from subconsciously wanting to be different: to be a guy in love with a guy or a girl in love with a girl. But you don't want to end up hating yourself for falling in love with the opposite gender or feel like you're just following the steps of anyone and everyone else doing the regular hetero-normative thing.
Do follow the above advice and take a break for about a week. Don't touch Mangago. I would stay away from stories, whether fanfiction or actual books, themselves for a while to avoid doing some of the things that are instinct, like shipping two cool guy characters together or feeling uneasy about a girlfriend of a guy character immediately. You'll probably find yourself with a lot of time on your hands. Pick up something: clear off the junk on your desk, hit up an old friend from middle school on FB, paint your nails as perfectly as possible. Stretch for 5 minutes. Watch something on YouTube or Twitch or go for a walk around your neighborhood. I went out for the first time in weeks just to take a walk around in the evening, and it felt really good. I was getting really comfy and nostalgic.
Try to get yourself more comfortable with hetero relationships again when you get back from that. Maybe read really wholesome or fulfilling stories or maybe go watch a couple that you know is in a really healthy and fun relationship on YT or Twitch. Ask for recs if you need it; people will definitely help you out with this type of shit.
I think straight couples are gross. I mean in mangas not actual people. I wish I was a boy so I could be gay. Im bi but i said if im gonna be a girl ill like girls. If im a boy, ill like boys. I wonder if anyone suffers like me. I think yaoi made me a new person. But I hope no one got offended. I just wanna know if anyone feels the same.