hi, over the last month i have been become depressed and confused about my sexuality. I am a 19 year old guy and for all my life i have never been attracted to guys just women. However this past month i have seen some gay porn pictures and found them arousing, and i now cant get turned on by thinking of women just men, but when i am aroused all i think of is women. another worry is that my sexual experience with women is limited and have never become arroused when it came to the sex, but i had always put this down to nerves because i became aroused at different times like while pulling in a club. however now i am wondering if this is a sign i am gay? Please help