Weird Sex Talker

I have this weird contact inside my MSN messenger keep on talking to me ..everything involved with sex..=.o" Should I or should i not just ignore her? She might think I am her friend, but I have no idea who she is actually..the other time, I told her that I cannot even recall who she is..but she seem like thinking that I am one of her friend..the friend might have the same name as mine ..guess she get the wrong person. Anyway she is not a stalker..just that I think she need someone to talk to but somehow or rather, i am getting bored of the same topic she keep on mentioning. Yay.. boring to the maximum, when she starts one " their position" duh!!