Has the title states, I have lustful thoughts about my female friend. However I do not want to pursue a relationship because 1, I do not think she is looking for one and 2, one of the four friend in this friend group had already tried to be in a relationship with said friend. It didn't not end well and I think that he may have ruin any shot with trying to pursue a relationship with her. I would like to try but I have a feeling it will not be possible. Am I an ass hole for having those lustful thoughts about said friend?

P.S. this is my first time posting. Hopefully I had typed it down so that is in a decent question form.