LOL
This is what i would do!Even though you guys are gonna laugh you will see what i mean!!!!
I would write her a letter and leave it under her door with a poem about love thats not written by yourself.The letter should be written by you and it should be light and cocky and funny like the ones you got in school!Childish even

Then even if she calls or text messages - ignore her!
However it is most likely that she wont!
Then i'll do it again the following week + 1 day so in other words if you gave it to her tuesday then give it to her next week wednesday!...different letter but same poem!
And same thing again but under no circumstances respond to any text messages or calls if you run in to her .....pretend like you did not even see her, even if she is right in front of you- unless she grabs you

Then the third week you write another letter but this time the letter says : YOU NEED TO GET OVER YOURSELF!!! Thats the heading.
And say crap like you a knight that went looking for his princess and found her bla bla bla something about how he made sacrifices for her bla bla bla and when found she did not even know he was for her!
And hurt by this and his armor being deeply bent he is forced to serve his days out alone bla bla bla
And worse she will never know the joy that could have been theirs !
And a different poem! about lost love!!!
If she does not come around after this .... you go fuck another girl on her front door so she can wake up!
Or you could just be a man and next time she invites you to her place just take her by the hand and kiss her even when she tries to pull away!
Some girls ned to be taken ....but gently!
Then apologise and leave!even if she was not trying to pull away!
She will be ''what the fuck'' and come after you!
and if that dont work why bother she must be dead inside!
So choice is yours?