Best friends to lovers to nothing

I'd been seeing a lady around town and one day had the confidence to approach and speak with her. We clicked and began seeing each other as friends. We became best friends over a period of six months and recently I told her I loved her, which is so true. But i lack confidence in making decisions with her now and I have twice told her we should just be friends after telling her how she makes me feel. She's totallly quit on me and i think I may have screwed her confidence too. She was giving herself to me and I threw it back in her face, but not deliberately. I feel like I've lost a real potential relationship before it's begun. Seems I sabotage or something.Can anybody help. I'm 27 she is 33.