What can i do to fix this?

so i am dating this girl who i s a virgin and im not and i dont date i jus hit and now were in a relationship and today she asked me if it will work and i said it wont be easy. thats simple right thenwe started talking some more and she said how long do yu think it will last and i said idk ive never been in a relationship without sex. and then she said that she had to go did i totally mess it up can it be fixed? what do i do when see her on tuesday.