Benson I hate to ay it but it sounds like Aya is very casual about you and is in no way serious about you at all. I really wish I could be one of the Densha style cheerleaders but in this case it’s just not in the cards.

I think your best/safest bet at this point is confession and see where that leads. In your next conversation on Skype or MSN just tell her you have something to say to her and say it. If she has mutual feelings she will let you know. If she has a Boyfriend she will tell you. If you have been Friend zoned then she will tell you that too. After that you can move on with your life one way or the other.