Help

I met my best friend when I was in 8th grade, (I’m a hs sophomore now) and we’ll call him John. Before I met John i was fairly certain I was straight. Then I started having these weird feelings about him and realized that I like him. Not gonna try and label myself, but I started to notice other guys too. Anyway, back to John. It took me a few months to figure out my feelings but now I am certain that I really like him and I want to take the next step but I am afraid because I don’t know if he’s gay or not. Any advice?