Some one has just told me they have feeling, im sceared?

A girl who i went to primay school with, we lost touch after we left primay school but found each other again when i was out one night. we have been txting for some time now. i secretly like her but neva told her then the other day she told me that the feelings she has for me are more than firends, im sceared and dont know what to do i told her i felt the same, but i have neva been in a propper relationship with any one and im really sceared about being in one. how can i get this sorted???????