First and Last question i'm ever going to ask on this, about sexuality?

[Jason]

I'm 16 years old. Up until 2 months ago I never doubted I was straight, I was always against the idea of being gay. Out of all my friends I was the one who loved girls so much. I've had several girlfriends, made out etc, and I just love kissing and holding girls. I was in love also a few years back, I still think about this girl. Anyway, Im now doubting my sexuality because I started getting unwanted gay thoughts, I have to go through with these thoughts everyday, I always look up similiar questions on this, and i'm basically obsessing over this. I'm depressed and I panic so much when I think about these thoughts, it's the first thing I think about in the morning and I just hate going through with each day, I want to go back to normal. When i'm around my regular friends which ive known for years, I get unwanted thoughts and I just like staying in the house now, This happens with every male I have to look and my mind thinks he's attractive, when I know ive never been sexually attracted to the male gender in my life. I think about suicide, I just hate the thought of losing my attraction to girls, and these have gotten in the way of how I usually look at girls. Ive been addicted to straight/lesbian porn since I was 13, I still jerk off to this porn as I find it hard not too, I just love watching females, they arouse me so much, always did. I tried gay porn for the first time in my life last night, and I was thinking to myself, If my penis gets hard, Im going to kill myself, but my penis got smaller and smaller, and I wasnt turned on at all. the thoughts also don't arouse me, but they also won't leave my mind. One more thing, If i can get an erection to girls now..will I always? I cant stand the thought of not being with one and not having children etc. Thank you all so much in advance.