If guys turn you on you are definitely not a lesbian. lesbians find men repulsive. from your description I would classify you as bicurious. you are questioning being intimate with a girl but fear a positive impact. you are more than likely a straight girl letting your mind roam about new experiences feeling a girl may be more sensitive to your personality. I am bi and find both men and women appealing and have no fear or inhibitions about showing them how i feel. perhaps a little therapy will determine your true sexuality.