We're Sortof Going Out But he has a Girlfriend?

Ok it all started in school, Last thurday this boy that i liked and still now like i was talking to him during lunch recess. I kissed him on the cheek.. So then he said were going out right so i was happy and said yess. Later i found he has a girlfriend that left the school but their still going out. I asked hi if they were going out he said he never talks to her and never sees her so their not going out.. What do I do.? Hes leaving the school causes he moving upstate.. School finishes on Wednesday.. While the rumor spread that i was dating him a boy that likes me who is not the prettest of them all or doesnt even have a good personalty started getting jealous and was crying. that made me feel bad -___- WHAT DO I DO ????? lol thankss