Does he like me or not?

He always starring at me till i look at him then he smiles at me and his eyes get bright and he always lauhgs when i tell him to quick and he always brushes up against me in the hallway and leaned over my desk whn i said can someone help me. and i was talking to my freinds but he almost punched me but stopedd in a play full way and i look at his fist then at him and he smiled ahh help he always smiles and brshes up against me an dstares! and in sceince he pick to be in my group cause we ran outta cards and she said pick a group and he already knew i had diamonds :) HELP!