I think there is just a "conversation" glitch between the two of you? It does not sound like you have discussed marriage together and gotten on a same page? You have been "dating" for nearly 2 years; I don't know how much slower one can take it? True, my husband and I were together five years before marriage but it took that amount of time for his divorce to become final; he was "working" on getting divorced all that time. What were you all doing, if not working toward marriage? It sounds like your ex-girlfriend did not feel very secure in your affections? I'm not saying you did not reassure her, only that she did not feel secure. Did you ever talk about her ultimatums and how they made you feel and what she wanted for the future and what you wanted, etc.?

If you did not love her, you should not have "kept" her for two years? If you do love her, how can you let her go? If you do not know if you love her or not after 2 years?????