Why you cheated on me?

I was only one year old and I have been looking forward to a boy that just moved all the way to New Orleans. I didn't even know him he saw me back and I feel look down and never saw him again he move again after 1 week never saw him again. after a long time I went to school and I saw him again. when we first talked it to me I feel so weird with him and then then everything changed after that he left again without me. years passed I passed all my grades I went to middle school
and I saw him again there. why is he always there when he leaves me. in college he graduated and I did too I never feel so sad after I passed so hard and all my school. And after everything changed he start hanging out with me. few months he broke up with me and went with a different girl never knew why? I wonder why would he do that to me when I'm already his girlfriend after that he cheated on me really bad I don't know what to do now all my life is ruined never saw him again neither his girlfriend.