Hi triple 5,
I'm the Brit half answering your question as to the why's an what's?
We can all give you advise about what we think and/or what maybe going on in your potential partners life? But at the same time we could be clouding your judgement as to how you think, so if you have doubt or doubt's you are the only one who can put your mind at rest, so to speak? Also you will know her a bit better than us lot??
So if you do feel as though your adrift with no wind or paddle, why not ask the girl if she is seeing someone else? Don't get or be angry with her but try to understand her, if she is with someone else, the way in which she replies may give an indication? But try to be calm and understanding when you chat or talk, we have a saying here in Scotland! "What is for you will not go by you?"
Again you may listen to everyone's opinions but at the end of the day it is all down to how to feel and deal with the situation? Hope this has helped even a small amount?
Regards P Livvy