(if this repeats twice, i apologize i can't find my question anywhere so i wanted to make sure it was posted)
long story short: was close friends with boyfriends sister, i decided to try and distance myself because i didn't find her a good friend and honestly, i am just busy with working and trying to build a life with him, etc. i rarely talk to her anymore (i'm not one for phone conversations), we only really talk (and the conversations are just fine, friendly) when we're around eachother in the same place with friends.
problem: we have mutual friends, and one invited me to go on a trip with her to go see a band that we both like with some other friends of hers, and i said yes. the trip's coming up soon, and i haven't informed my boyfriend's sister about it yet, haven't been sure how (hate the fact that i feel like i HAVE to inform her, i don't feel this way even with my boyfriend). she's the type that would be angry because why would i get invited over her, why wasn't she asked, she has to be part of everything, etc. so that's been stopping me from telling her as well, even though me NOT telling her'll only make her this way too. i feel it's rude to just text her or call her out of theb blue to just be like,"oh hey, wanted to let you know this. blahblah. so you know. oook, bye." i don't want it to come off like i'm rubbing it in her face or anything.
or i could just not say anything at all and go and then deal with the blows whenever i return? i'm just not sure what to do, what to say. i even deleted a comment on FB the girl made to me about the upcoming event just to avoid any kind of confrontation. the only reason i worry so much is that i don't want her to get upset and then there's strain between me and my boyfriend or anything cause she's not spoken to him for months before when he's dated someone she didn't like, etc.
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