HELP!!! How do I breakup with a long term relationship

Me and my boyfriend have been together for 2 years now he is amazing and a gentleman but I am only in 11th grade and I want to explore my options and experiment with other people. How does one even break up with someone? In person? What if he cries? Do I hug him? What if he gets angry? I just don’t know how to approach it? How do I even bring up the conversation? Please help!