I need help forgetting him...:(?

So the thing is i need help forgettn this dude...i see him everyday...his brother lkes me n i also see him everyday but i dont lke him bak...i lke him alot...and i dont know how to forget him!!:(( its just 2 hard known dat he doesnt lke me...:(((i always end up sad at the end of the day just cuz of him:((((