How do I tell him I wanna get out of the friend zone

So I am really good friends with a guy in the grade below me we have been talking since the beginning of August and it's December. We barley hang out because of sports and when ever I do try to set something up he is busy. But whenever I do see him or hang he's all around me and all into me. When we text or are in public we playfully call eachother bae and honey, and I actually wanna be his. I just don't know how to tell him I wanna be something more than just friends.