Was the irony that both of them initially contacted you through semi-stalkerish means intentional?

Also, did you ever speak, even once, to the girl in the first scenario again after the AIM fiasco? Seems slightly weird that you go from being buddy-buddy to OMG STOP TALKING TO ME (BLOCK) in the course of 24 hours. Outside chance that it was actually her jealous boyfriend who did it?

Completely agree with the "girls just say that to flatter themselves" comment.