I am an 18 year old male who has always been attracted to females, when i was a little boy before puberty i had girl crushes and all through puberty i used to fantasize about girls my age and masturbate ovet straight porn. However i got bored of my first gf as i lost attraction to her as she was skinny with no boobs or bum(worry 1). I love girls bums and i think my fetish are girls with fat *** and take ****(worry2). I also am currently in a relationship with a very attractive girl. However i am starting to lose attraction to her as the 'hooney moon period' has past and i found myself imagining her to be other girls. I am also very frustrated with the number of sexual partners ive had. Anyway last month i smoked weed and while high i thought to myself 'am i gay' i freaked out. The day after i had a very low sex drive and didnt have sex with my gf. That lead me to question my sexuallity and have a panic attack. A month later and its ruining my life i have the constant fear that im 'turning gay' or was 'gay all along' or i am a closet homosexual. This is affecting my attraction towards girls and i struggle to even masturbate without getting anxious. However, i have had sex 3 times this month. All being successful. Also i have never found a guy sexually attractive in my life, never fancied one, never fantasized or masturbated over one. Why do i have such a low sex drive and fear of being gay for?