Confused about sexual orientation, am I gay, straight or bi?

You should think about things before you jump to conclusion. Stop looking at stuff online, and go get some experience with people out there, after you've tried what you think is enough, you'll be qualified to make a valid decision.

I see a lot of good advice here already.

It is entirely normal for males to fantasize about sexual involvement and activities with other males, particularly if their experience with females is limited (or non-existent)..

As a male yourself, your body is exploring your sexual senses, and so the only thing you have to work with is how another boy might feel to you. It's hard to imagine something else when you have no material ("hands-on") experience to work with.

Finding our sexual identity along the full spectrum of human sexuality is a long journey that may never be fully resolved. In other words, our evolving experiences, desires, successes and failures, emotional satisfaction and health all dictate to whom we want to see ourselves being involved -- who we will desire. It's always "in-progress" so to speak.

A good point was made that you are worrying about it your orientation a bit prematurely. Real Life sexual activity is FAR different from what we imagine or plan for it to be once we actually get there. And porn is only designed to get you off no matter which way you go. So, whichever way you turn to try to find sexual pleasure and satisfaction, learn, and consider calmly what you feel from those encounters. There are no rules; you MUST be true to who you are at any given point iin your life. Be a kind and loving friend and confidant, and take love as it comes to you (and it will).

Love whom you can, whenever you can, the best you can, and good luck!