I was cashiering at on a slow friday night shift, a guy came by my line and I saw his student ID that we go to the same school. Talked for a few minutes and flirted a little but the phone rang so I said nice to meet you and he left without leaving a name. Today, a co-worker told me some guy came yesterday and left me a his name and number to call him if I'm interested in psychology (he told me was a psych graduate student). Anyways, should I call? text? when? is it weird? has this happened to anyone else?