How can I (21F) approach a guy I really like

Hey everyone!

Well let's get to the point. I like this guy and I think he's also interested in me.

(He notices the very small details about me, always trying to initiate a convo, including me everytime I'm alone, asks if I'm okay whenever I'm in distress, is kinda short-tempered but didn't uttered even a single word when I was being rude to him for some reason, etc.)

BUT for a particular reason, I know that I have to approach him first, he can't do that.

So, men of this subreddit, tell me a thing!

Is it okay for you guys if a girl asks you out? Or are you going to label her as "down bad" or something for taking the first step?

And

What's your take on this? What should I do?

Thanks!🙏🏻