Quote: How can I plan to buy property with her 5-10 years down the road when I have a problem envisioning us together this time next year?
I don't think her denial about the problems in your relationship necessarily is directly related to any wimpyness that is keeping you from directly expressing your dissatisfaction repeatedly. After all, I used to cry like a baby on a semi-regular basis when my H rejected me and yet he has said that he didn't know there was anything wrong with our relationship until I finally took a stand. I think it's much more effective to "walk the walk" in some concrete way than to "talk the talk". For instance, if you were to initiate sex and she rejected you, IMO it would be much more effective to simply put on your coat and calmly say "I'm going to the bar." than to spend a couple hours talking about your need for physical intimacy in your relationship.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver