I am worried that even if I truly go away, date other women, keep her at bay long enough that she's begging for me back, that once I let her back in, the same thing will happen again. I'm a one woman man, and I want a committed R. That just might be incompatible with who she is.
What does she say when you tell her this? Does she believe you? I agree with you. It's time for her to make a decision. It's time for YOU to decide if this is the end or not. You do deserve someone that wants to be with YOU and only YOU. It's time for her to choose. Or YOU are wasting YOUR LIFE AWAY with someone UNDESERVING of your LOVE.