*Love Problems*

Hey! Im getting ready to turn 14 in 2 days. Ive just recently had a breakup with my boyfriend of 1 year and 3 months. While we were dating I still liked this boy I had dated before. But I kept it to myself because I was soo in love with my boyfriend. I know that sounds weird cause Im just 13 but I mean I was with him for so long. But we brokeup because he said he wanted to be single,so I figured there was another girl.And there was ,he started dating a girl from his school and I was talking to the boy Ive liked for a long time.But what I dont understand is why he dated me for soo long then wanted to be single,but instead dates someone else? can someone answer me and tell me what they think and if theyve been in that position?THANKS A BUNCH!!!!!!! BYE :-)