Many such cases?
By Why Universe? Why!? - 20/04/2026 06:00 - Philippines - Makati City
By Why Universe? Why!? - 20/04/2026 06:00 - Philippines - Makati City
By Anonymous - 26/08/2024 13:00 - United States
By hateparents - 11/10/2009 11:25 - Australia
By Shadley Chase Teladia - This FML is from back in 2018 but it's good stuff - South Africa - Johannesburg
By .... - 08/06/2009 04:08 - United States
By Anonymous - 23/08/2012 21:40 - Ireland - Kilkelly
By wtf dad - 10/01/2013 03:15 - United States - Saint Charles
By FreakedOut - 31/07/2009 08:03 - United States
By Anonymous - 24/09/2011 23:01 - United States
By Middle Age Divorced Dad - 26/01/2023 08:00 - Canada - Kanata
By guy - 15/03/2013 05:31 - Canada - Port Coquitlam
Good thing you found out now.
Yikes. Small world. BTW, I don't know how old you are, but your first time is not very likely to be the one you marry. Regardless, maybe get a DNA test and see if it's absolutely your sister. (People don't say "Half" any longer.)
A bit confused, if she's not related to your dad and you are not relatef to her mom, where does the half sibling part come in?
Keywords
Good thing you found out now.
Yikes. Small world. BTW, I don't know how old you are, but your first time is not very likely to be the one you marry. Regardless, maybe get a DNA test and see if it's absolutely your sister. (People don't say "Half" any longer.)