I was adopted alongside my siblings at a very young age. My brother was 5, my sister was 4 and I was 18 months old.
I have no memories of my biological parents since I was so young but my older siblings do. Since being adopted we have had no contact them with them and I’ve never really cared much about them.
The reason we were adopted was due to my sister being found with a broken leg while apparently having been neglected by my biological parents so it was assumed they either abused her or didn’t care for her.
For some reason, all these years later, since I’ve turned 18 there’s been a sudden impetus to renew contact with these people I’ve never met or known. My adoptive parents throughout my childhood made it taboo to mention adoption and didn’t even tell me I was adopted until I found out myself but now things have changed.
This is largely due to my sister. For some bizarre reason she is so obsessed with seeking contact with our biological parents, mostly because she wants to figure out why she was neglected and had a broken leg. She constantly banged on about wanting to meet them for a year so she went and visited them; though I didn’t. This produced a gateway for my biological parents (strangers to me) to re-enter my life.
Now, she constantly maintains contact with our biological parents - though it’s not in a particularly good way. I can always hear her venting on phone calls to them about why they neglected her and about how hard it is for her to forgive them and about other things like how she wants to meet our younger siblings (since my biological parents had more children after we left) and she phones and texts our younger siblings.
She also persistently brings up being adopted into conversations with me and my adoptive parents and constantly talks about our biological parents which pisses me off because I feel as though these strangers are being imposed onto me all because of her obsession.
I am not obsessed with them - I’m genuinely indifferent (like a lot of adopted children are contrary to the views of those who think all adopted children have strong views about their real parents). But because she’s so obsessed, I feel unsettled with my adoptive parents.
Also, thanks to her my biological parents are seeking contact with me and won’t take no for an answer. Since they know where we live thanks to her telling them, they’ve made numerous visits and asked her for my phone number to be able to text and call me. And what’s worse is my adoptive parents are now getting into it and urging me to make contact with my biological parents because they want to save face with them due to my sister dragging them into the fray. This has meant that my adoptive parents invited my biological parents to our house after my sister banged on about meeting them and they tried coming to my room, banging on it and begging to meet me while I just locked my door and remained there. I’m sure you can understand how unsettling that must be for me but my adoptive parents and biological parents and sister clearly don’t care.
I just fundamentally don’t understand why my sister is so obsessed with them when I’m not? And if she cares so much about them, why should I be affected?
What should I do?