This girl asked me if I love her. What should I say?

Because you are asking I assume you do not share her feelings. Maybe say something along the lines of I like you and appreciate x,y,z about you but no, I can't say that I have a romantic love for you.

Covfefe.

Say no

just say - "No, not yet. But maybe one day I will and then you'll stomp on my heart and leave me like a withered leave on the ground so that you could walk on me over and over again. OK? :D"

Are you dating her?

"For you, I would climb the highest mountain. I would swim the deepest sea."

If you don't like her just tell her

You must be her first date ever

We both need time to think 🙄

depends how good your head game is

I will never love you