Omg im so mad/ sad , help ?

so theres this boy who ive known since 1st grade im a sophmore in highschool now. at 8th grade graduation he told our cl he was moving i was so upset, so off he went to a completly diferent state but now he came back at the beginnign of this school year but we go to different highschools and have completely different friends we even cept in touch when he was away for that year. but i really like him and for a while he even liked me (he told me) but all of a sudden ive stoped getting ims and calls and text and nothings the same. his away message has like 5 girls names in it and it pisses me off so bad cause i really like him . the other day i told him i had feelings for him, he kinda laughted it off . should i try and forget him or what ? HELP ? ( :