Based off of my description, am I bi, straight, or gay?

So when I was 9, my friend and I experimented and liked it, but then he moved. After that, at school, I wouldn't show any affection to guys, I didn't like them with love or anything, I didn't know what to think at that age. Then in middle school (I'm a guy) I made a new friend (blk) and we experimented again and I liked it and loved the feeling. But then things grew awkward between us and only say hi every now or then. But now in high school, there are certain guys that I "like". These guys that I tend to target have a buzzed head, are fit, tanish, and have cool eyes like blue or something. When I see one of these guys, for example at my swim meet yesterday, I saw another guy that fit that description and I looked at him while waiting to swim for my event. He looked at me and smiled as he would glance over every few seconds as he talked to his friends. I liked to look at the guy, but I didn't have the guts to go up to the guy and talk. is that bi? do I just like guys b/c of visual attraction? and later during the swim meet, I went to the food concessions and saw where he was sitting and that guy was looking at me again, I knew he liked something about me, but I didn't see him after that. So in a summary, I fantasize about the feeling of sex with a guy and I like to stare at specific guys that fit my description and I look at gay porn, girl porn turns me on too. I also like to talk to girls and recently I've found it easy to talk to a girl and point out things in her that I like. If I want a girlfriend, I just need to put in the effort to talk to her more, but I haven't done that yet haha (I've had feelings for 2 girls before, 1st girl we became bf and gf, but a year later into the relationship, it started to not workout well so we broke up and then the 2nd girl Allison, was in my history class this past 2nd semester and I actually had feelings for her. But as time went on, I started thinking of the bad things that could happen. She was on the weird side and I started thinking what if she was too weird? I would catch her starring at me alot so I backed off her. This goes for guys too, I always think of the bad outcomes when I become too friendly with a guy. I have plenty of guy friends, but only 6 or 7 out of the 40 guy friends I have, come to my house. I guess I'm afraid to have guys over, fearful of what could happen if he spends the night etc.) sorry for it being long haha