Don't know if my friend knows I'm lesbian or not

Friend: talking about how fit a certain older guy is.
Me: "A lot of people find him fit"
Friend: continues to talk about him being fit, including certain aspects of his body (not in a gross way, just like a girly noticing things way, if that makes sense)
Me: not saying my opinion on the guy, but jokingly asking friend why they were looking
Friend: laughs then (bearing in mind I'm seen as the more innocent 'baby' of the friendship group) says "you're just disinterested, am I right?" Then gives me a certain caution look, hard to explain, but sort of like a 'tredding on thin ice' look, like they're being careful to get the wording right so as not to offend.
Me: "yes"
Friend: nods with an acknowledging "right".
End of conversation. I have been 'in the closet ' for a little while now. I haven't been openly talking about lgbtq or finding women fit or anything, but I've been deliberately not commenting when the others discuss boyfriends or fit guys, for example.
What do you think my friend meant by 'disinterested', what did I say yes to - does she think I mean that I think I haven't reached a stage in life yet when I am thinking about relationships and see myself as still too young, or did I just accidentally come out as gay to her? I just want to know where I'm up to - does she now know I am gay or is that not what she meant at all and still has no idea? It's bugging me that I don't know. I don't want to ask her because if she doesn't know yet I would prefer to keep in the closet for a little bit longer just until I've really finished working things out for myself. But if she doesn't think I meant I'm gay she might have completely forgot about it so there's no point in bringing it up again.