Boy trouble????????????????

ok, So there is this guy at my school, and his name is DAkota. He moved here from Cleveland over the summer, he rented a house next to my friends house. At this party my friend had, he asked me out. I said yes. My b day is sep 2 and his is sep 5. So around my birthday, we broke up. We broke up because I knew he liked my best friend Sara , not Jess the one he lives next to. So Dakota asked sarah out, and she said yes. It hurt sooo bad. She back stabbed me. My heart was broke. AND IF IT COULDN'T GET ANY WORSE!!!! Sarah told me he gave her a necklace, my birthday present. After awhile she dumped him because he was squeezing her but in public and gettin fantsy. So now we both hate him, but i fear i still like him. What do i do??