Hi, I’m a woman and I didn’t think there was anything wrong with the headphone piece. In reality, I thought it was super cute and represents how guys can be adorable when they really like a girl.
If you go out of your way to make a fool of yourself to get my attention, even if I’m wearing headphones, then I will probably talk to you.
Not all guys may be as confident as you, so approaching a girl might be hard. It’s people like you that make sexism a thing. That guy was just trying to be cute and honest. You’re being the asshole.