<human>: Condense the text into a few key points

My ex (30f) and I split up in May and have had no contact outside of what is necessary to manage joint property, etc... In September, I (33m) met a great girl (25f) and we've had a great relationship so far... My ex and I are still legally married, as there is a waiting peroid to get divorced where I live. 

In any event, I've always called her my ex, and I guess she took that to mean that we were already divorced, but we never really discussed the specifics, until last night... I've never thought much about it, she's not part of my life anymore and it's basically only a legal distinction at this point... But last night my gf asks me "Are you still legally married?", and I answer "yes", thinking nothing of it... Well, she thought it was a big deal. She got really cold, said she felt stupid, and asked me to take her home... Saw her again on the bus this morning, and she was still really cold, I'm afraid this is it. 

So... what do I do now? She thinks I lied to her, but I don't see it that way... I wasn't intentionally keeping anything from her, I just didn't think it mattered and I didn't think about it, and I was honest and direct when the issue was actually raised. The other thing that could be going on here is that we've been really falling for eachother, and she has some problems with committment... I'm wondering if maybe she was just looking for a reason to push away from me, and this one is as good as any. 

So, any advice on how to manage this would be great, I'm genuinely falling in love with this girl and I would hate to lose her over this. Thanks.
<bot>: Told my GF of 3 months that I'm still legally married, she's pissed, and I need advice about what to do next.