Welcome back, Aggressive. I don't really want to talk about it any more though, maybe later...
Ok one short answer question: What do you say when a girl you like who has a boyfriend asks who you like? She's asked me a couple times and I said "nobody," but she doesn't believe me and says that "she'll stop bugging me if I give her a name."
Just be casual about it. And if she does say that just laugh it off and change the subject.
Only if you make it obvious. Just saying oh ya I do, but right now isn't a good time for me to be pursuing her doesn't scream that it is her.