<human>: Condense the text into a few key points

We've been together for 2ish years and have had a few break-ups to make-ups here and there, but lately I've been feeling we've run our course.  I know she loves me and wants to marry me, but I can't shake the feeling of knowing she isn't the one for me.  

This just isn't what I imagined my love life to be like.  I feel like we bicker all the time and she's become passive aggressive, almost as if she's challenging me to finally do it.  She deserves honesty, but I can't give it to her.  I tell her I love her, but I really don't. 

I want a warm and fuzzy relationship that I feel in my heart.  I just feel like she ultimately isn't my type.  It's unfortunate, because there are a lot of cool things about her, but I feel like I'm lying to myself being with her.  I feel like I've settled and given up on the most important decision of my life.  

However, this all has gotten complicated.  We live together and share many of the same friends.  I feel like this all could be very dramatic.  I really don't want to hurt her feelings and see her cry, even though I know it's the right thing to do. 

What should I do?
<bot>: Been with this girl for 2 years, feels like she isn't the one, want to break-up, can't do it though because I can't.