I participated in a project about 2 weeks ago that implied more than 100 students and where I saw this girl. I know her name (from a whatsapp group related to the project) and that we study at the same university (Police Academy) Should I add her on Facebook (I don't have pictures of me online as I don't like to) and set a date? I think this won't work as she doesn't really know who I am and what I look like. Could you, please, give me a piece of advice?