>>4236226>be only child>live with mom and grandma, dad lives with his parents and his brother>my parents are happily married>one day when I was little I was playing around, end up in my dad's room>go under his bed because why not>see some father's day stuff, but it wasn't from me>it was from a girl a little younger than me>she looks a lot like my dad, just like I do>connect the dots with some other stuff yadda yadda>never said anything until my dad directly told me I had a step sister a few years laterAnd that's the story of how I found out I had a step sister