This girl in my bio lab table added me on snapchat out of the blue. We exchanged numbers incase one of us were absent something else (her idea). Now she added me on snapchat with the excuse of her phone reset so she lost my numb. You can add someone on snapchat with either someone phone number (she said she lost) username (I didn't give her) or snapcode (I don't have one). Girls add me on sc but I know them already and I don't know her well plus it seemed like it was a white lie.