So me and my sister have an age gap of 3 years, (me being younger) and we're both still in our teen years.

For some context, lately I've been feeling very insecure and vulnerable about my friendships, feeling as if my friends are all distancing themselves from me and that I've got no true friends that I can truly rely on (note that me and my family moved in a whole other CONTINENT in like September 2024).

My sister has always been an introvert whether as I'm more of an ambivert/extrovert so I tend to get along with others more. She does have friends but not as many as me and I tend to care about social appearances a lot more than she does, so she acts a bit more... well "weird" than I do.

For some reason, she's been obsessed with hanging out with me for the past year or so and I've never really been bothered by it except for some times when she really did NOT leave me alone, insisting that she came along with me and my friends, once, she even intruded quality time with my boyfriend, demanding that I hang out with her.

So 2 nights ago, she reprimanded me about how much sugar I put in my natural yogurt (which I don't even know why it mattered so much to her, as she's the one who has a very high cholesterol, not me, and thinks that the rules that our parents set in place for her to reduce her sugar intake also apply to me?? And it wasn't that deep in the first place...) to which I responded, why did it matter to her? She got mad and said that this was why my friends were "fake" even though she knew that I was struggling with that.

Naturally, I got mad but kept my cool. (Little reminder again that she's 3 years older but never has acted like an older sister to me, and that in our relationship, the roles are reversed, with me taking care of her and being more mature) I just told her not to talk to me about that but she kept insulting me, calling me names and poking at me, so I snapped and said that she shouldn't be talking because she doesn't have friends either and that's probably why she clingers on to me all the time.

She stormed off while calling me an effing bi--- and cried in her room. The next morning, she texted our father (because he was out on a business trip) and complained to our mother and now, both of my parents are reprimanding me, telling me I should've just let it go like I always do and that's probably why it wasn't such a big deal.

Now I'm second guessing my decisions and words, and it's snowballing to this whole situation, with both of our parents being on my sister's side (like always...) and they're all gaslighting me into thinking that she never said anything and that I just exploded on her out of no where...

AITAH??