whenever we have lessons together he keeps looking at me then when i see him he turns away

ok.. so i fancy this boy and he fancied me to but my friend went u to him and asked him if he still fancies me but he said no but i spotted about 2 wekks ago whenever we have lessons together he keeps looking at me then when i see him he turns away staight away should i say anything to him ...

i need help now

thnx to anyone to help