I just tested a variation of a routine to get a girl's phone number.
She is new in the city (2weeks), I was hanging around with a bunch of friends so before I left I asked her phone number. She could not remember her full phone number (it was legitimate, I saw her saying that to a female friend too) and she had it on her phone screen saver (wtf)

popping in and out.
So I grabbed her phone rang myself and job done. Couple of goodbye kisses and a date for saturday at a house party.
I think I am making things harder for myself by choosing the new girl in town... I like challenges hahaha!!