Everytime I try to mention Bitcoins while hanging out with girlfriends they always look confused and change the subject, yet they're not "dumb girls", they've been to Uni, spend a lot of time online, have paypal acc's, online banking, etc. Why are they so reluctant to hear about Bitcoins?
Maybe because you sound like a preacher trying to sell a religion? Don't do that. Only talk about bitcoin if you are asked about it and even then be brief.