Very simple ... communication is the key.
It may sound like a cop-out answer, but sit down sometime and talk about it.
The trick is to read between the lines. I bet that she is not comimtted to you, or much else by the sounds of it. You will get the picture if you listen not so much to what she says (which is important) but also to what she doesn't say (which is more important).
It takes a lot of guts to really talk about stuff like this, whether you're at school and known the girl for 2 years, or been married to the same lady for 20 years. Take the plunge and you will really find out.
Not much more can really be said unless you discuss it with her.
