You will just know when the time is right. You should hook up with her first upon kissing her then you know it is probly alright if you two are going out for a while.Tell her how you feel don't be scared the most she can do is say she feels the same or she doesn't. There alot more people out there for you to meet dont let things ever reck your life over one person its not worth it.it took me 7 months to get over some one I really loved. I was a mess at the time.