I don't even know my half sister. Well , I'm 18 years old and when I was around 12 or something my friend told me I had a half sister.I thaught he was just bull****ting but then I went home that night and I asked my mother and I told her please don't lie to me.And then she started crying and she was like you deserve to know the truth you're dad has a daughter and she lives in Sweden, (I live in Canada)She was shocked that her best friend (my friends mother) told him this.I don't even know her name but I know shes around 20 -25? and has a kid so technically im someones uncle I guess..Also I have a brother, he's 15 and we live together but he has no idea about having a step sister somewhere in this world.Also in the 18 years I've been living with my father , he has never mentioned this. Now my question is , if you guys were in my situation.. would you wan't to meet with her someday or maybe you wouldn't care? I mean we have the same dad..that kinda makes us close =/? Any opinions would be greatly appreciated because there aren't many people I can discuss this with...Have a nice day.