I've known someone who is asexual but currently no. I don't think it's rly something that most people tell everyone, unlike whether you're gay or straight. Like, why would your friends wanna know that you don't experience sexual attraction?
I consider myself to be near to asexual tbh. Idk I hate labels. Sex doesn't interest me, it bores me however I usually say that I'm "gay" to make it easier rather than explaining.
I suspect my best male friend could be - he's a good looking, tall, tan, olive-skinned guy who thank GOD I've never had a crush on, and he's literally never had his love interest (well, that I've known about) since I've known him. And that was since he was like 14/15. Now we're 24 - and still!