Is NOBODY wrong in the post ? POST : My younger brother's 13. I'm 19M. Recently, he's been asking some people, including me, about how to get a crush. We had a pretty lengthy conversation with it, because I'm on vacation from college for the week. 

So, he mentioned that he asked a female friend of his, and she said something along the lines of just be nice. I told him while it's true, it'a not the greatest advice, because *just being nice* won't really do anything. You need to be nice + do some other stuff. Later on in the conversation, when he kept mentioning a lot of advice the same female friend gave (most of it *true* but not good advice). So I asked him, is this girl straight? He said, as far he knows, yes. I told him, it's generally not good for guys to take dating advice from straight girls (or vice versa, girls taking advice from straight guys), because straight girls don't have experience trying to get other girls to like them romantically. 

For whatever reason, my brother let this drop to my mom. I don't think it's a big deal, but she thinks it's sexist. I don't see it that way because 1) it's common sense that straight girls have no experience flirting with other girls, and therefore aren't going to be giving the best advice and 2) it isn't sexist, because it goes both ways, and the vice versa also applies: I wouldn't expect girls to come to be fir dating advice on how to get a guy, because I have no experience with that.

Aita?