This girl is saving herself for marriage. I really want to be with her but i cant wait for sex. help?

eveything about her is perfect except that shes waiting till marrige. she's 18 and i'm 17. She's diffferent from most girls. She told me upfront that she wasnt having sex until she was engaged or married. she said high school relationships rarely last and she wasnt putting herself in that position. She told me if i couldnt wait then don't even bother dating her. i said i dont know if i can because i need sex and she was like " your loss. goodbye good luck and good riddance. ". i texted her and she hasnt replied. nor is she answering my calls. She is the most assertive, pure person i've ever met. i didnt even know pure and assertive could be in the same sentence