In all honesty I usually meet said girl, friend her on facebook, talk to her on facebook, and then say something along the lines of
"Hey I gotta go but text me if you wanna?_____________ (insert your phone number here)"
that way you get to know them before you ask, AND, you give them the choice. if they text you then you made the right move, if they don't then move on to another girl haha
SELL ME YOUR XL JIBERISH DRIPSET.