She's young. Everyone takes ea other for granted eventually, it's human nature. When one of you recognizes it, the other one corrects it and you move on, together. It's not an unpardonable sin by any stretch, and if anything that tells me there's a lot of emotional immaturity on her part. I've been married 34 years and yes, <raises hand>, I've taken my wife for granted before. She's taken me for granted before. One of the big lessons in life is to really and truly appreciate what you have, and it's an ongoing lesson that never stops. That alone is not a reason to bail on someone. So she's either really immature or there's something she's not telling you. Either way, you are better off now, even though you may not see it yet. The other thing is, her timing is absolutely and atrociously evil. She could have waited until after the 1st of the year. But making a unilateral decision like this on that day is reprehensible. If nothing else, this should reinforce to you that you are much better off without this girl.