I was walking a girl home to her hotel with an older man (work colleague), when it was time to drop her off she just kissed me bye (social kiss) and left. Fuck I was stupid, I should have said "hey, what a coincidence, that's my hotel too!" and gone in with her or asked for her Facebook (I did think of this but then forgot to) to send her messages later to come over. Did I fuck it up? What should I have done?