A quick piece of advice: Don't ever tell a chick that she's hard to get a hold of, or ask her why she didn't return your messages, etc. It shows neediness. It is one of my absolutely golden and unbreakable rules. I have sometimes had chicks give me complete radio silence for anywhere from several weeks to several months, then suddenly re-initiate contact. I NEVER mention "wow where have you been all this time" because I presume that she's been busy, and so have I. More than one girl has told me how much she appreciates that particular form of non-neediness (acting like weeks or months of no contact is no big deal). Why is this so important for chicks? From an emotional standpoint, a chick will go into periods of depression/jealousy/uncertainty where she is caught up in how she feels about some other guy(s). During that time, the last thing she wants is a random guy she only met once on the street for 5 minutes asking her why she doesn't return calls. Just keep her lightly pinged, and if she does not reply to a message then increase the interval. Eventually, she MAY reply and be interested again. Is it fair? Would a business survive if it operated that way? Hell no. But that's just the way it works.