Cant forget about this guy?

Me and this guy dated for a while and broke up at the end of december. everything was going great until he invited me to his parents to meet them/ eat dinner. They seemed pretty cool with me then me and him went to the basement to watch a movie( just us two) and he gave me my first kiss. I hadnt told him i had not kissed anyone because im kina shy about stuff like that and i didnt think it would happen that night because i had just gotten over the swine flu! i told him not to kiss me when he tried that i was getting over being sick but he kept trying anyways and ...it eventually just happend. we kept going for like 10 minutes because it was fun..i was scared at the same time tho the entire time and i think he knew it. then he said i should leave cuz he had to go to work in the morning but that he couldnt wait to hang again. i left and he was acting weird. then i never heard from him again....wouldnt respond to my texts n stuff. its been like 4 months and i see him EVERY day at school=( he says hi but im too bitter to stop and talk to him. i just wanna erase him from my mind. i dont know what to do. just let it go?