I think I may be gay, and I’m really confused.

For reference, I’m 17 and typing this while in forensics class.For the last 6 years or so I’ve been silently debating my sexuality. I’ve still watched straight porn and “talked” to girls and dated, but I’ve always had the thought in my mind. I really don’t think I look at guys in a sexual manner, but a part of me thinks I do. I have no idea how to explain it, but when my best friend comes around I just kinda get this happy smile and everything becomes good. We hang out a lot and I can’t imagine not being with him. I’m really confused and dont know what to think to be honest. I’ve got quite a lot of gay friends / family members so I know nothing would come of me coming out, but I just really dont know anymore. If anyone could provide any type of insight I’d appreciate it because im fucking lost in my own head right now.