If you are a girl, you fall in love with someone, but he doesn't necessarily love you, so don't miss it? Of course not. How can you give up easily without trying? Maybe he just didn't notice you. Give him a chance. So girls should take the initiative at this time.
However, I don't think it is necessary for girls to express their initiative clearly, and some behaviors will be understood by the other party. If he is really stupid, tell the truth and confess.
Many boys don't like girls to take the initiative, and may think that things that are too easy to get are not worth cherishing. So I think a girl should be able to guide, take the initiative not to be too obvious, and not to like it too much, so that she may easily feel superior. I don't think the barrier yarn for women chasing men is absolute. Let him know if you like it anyway, or you will regret it all your life. Only in this way can we reap true love.