How can I forget about or talk to my old crush again?

this may sound weird to some people on gag

but back in my last year of highschool 2014 i had a very good looking English teacher she was only 24 i had a crush on her

a few years after highschool i sent her a friend request on facebook and a few messages she never responded what can i do?
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she was my English teacher back in 2014 that was my last year of highschool
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would it be ok if i said this to her I enjoyed being in your class, I hope your doing well. I always thought you were pretty and I was wondering if you were still teaching and how you have been?
How can I forget about or talk to my old crush again?
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