I asked her about commitment in October, and she turned me down, saying "we're not compatible."
Then why was she wasting your time?
A few years ago my young male cousin (late 20's) asked me what he should buy his girlfriend (of about 2 years) for Christmas. I said "an engagement ring". He looked at me like I was crazy and said "no, I don't want to marry her". Upon discussion he said he knew she was not the one. I asked why he was with her, and he responded he would stay until he found something better. I don't understand people sometimes. If someone knows for sure a person is not the one, why waste your and their time? That is so sad.