I can understand your confusion but all too many times we are looking for labels that just are not needed. I believe that you are straight as you do not have sexual attraction to women. That would be considered bi. It is most likely that something occurred in your life that caused you to have trust issues with men. So it is hard to emotionally attach to men. Many years ago women stayed together while the men went off to war or work or to hunt and gather. Women were in the company of women for centuries and we are emotionally more alike than men as well. It is no wonder that you can appreciate a woman's beauty but that does not necessarily make you bi or a lesbian. I think you are worrying about nothing at all. Enjoy your women friends.