Omg can you imagine her thoughts when both of you argued? She probably feels super bad for lying though.

Sounds like the Madea's Big Happy Family movie

I've seen this a lot on tv but damn sorry that's somethig scaring

This is exactly what happened to one of my ex's "brother"- really nephew. He found out that the "sister" he hated is his mom. She was constantly in and out of jail for drugs and couldn't take care of him.

That's not so bad. I agree its an fml that you are just now finding out, but this happens a lot. The mother is too young to care for the child herself, or her parents are embarrassed that she became a mother so young/out of wedlock, so they claim the child as theirs. I've had several friends that had this exact situation. You naturally harbor a dislike towards her because deep down you knew, and she rejected you as her own. That may not have been the case, but a lot of people feel rejected when they find out their parents aren't their biological parents, unless their bio-parents died. Hard to be mad at someone who died. You may not want to establish an actual relationship with her, as you've always hated her as a sister, but that hatred goes away with time.

If you hated her always, it's probably a good thing she didn't raise you. Your grandparents/parents should be praised for having parenthood thrust upon them and succeeding.

The sister must have hated that you hated her but never have been able to say anything without giving it away. Oh my god that would be really weird.

what made you hate her.. as a sister?

Then it really was for the best, eh?

Few years to late but I'm still saying that sucks