I think my little sister is lesbian what do I do?

Anonymous
My sister is 13 years younger than me she’s 12. She’s told me that she doesn’t like boys or girls. I remember when I was a kid knowing exactly what I liked. I kind of feel like she likes girls but isn’t fully sure yet because usually you know girls like boys boys like girls etc. I don’t care what she likes she’s my only sibling I’m rocking with her regardless. I just would like to know how to approach that topic with her. Should I directly ask her? Or when we talk about it again let her know that I wouldn’t care if she’s gay and don’t ask her and let her come out to me when she’s ready? She’s kind of one of them “popular” girls so she might want to hide it from people.
I think my little sister is lesbian what do I do?
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