Fiancée suddenly went cold and avoids commitment talk—should I move on?

My fiancee has gone cold. One day we were fine, even intimate, the next shut down, will barely talk to me. So I figured maybe she needs some space. I asked straight out, would you like for me to leave you alone? Her response was, I know what I should do, but i can't. And now when we talk, I ask her about being together and she will not give me an answer. Is it time for me to move on or is there more to her refusal to answer?

Fiancée suddenly went cold and avoids commitment talk—should I move on?
Post Opinion