I was in a relationship with a guy for only 2-3 months and we broke things off about 5 months ago. Then he apologized and we started talking again but he was also talking to another girl. They ended dating for a month then he apologized to me again and they broke up. This happened about 1.5 months ago. I told him I still really liked him and would give him my all if we could try again. He said he didn't have an answer. He never gave me an answer and when I ask he says he still doesn't have one. I believe he's taking to the other girl again. Why am I still crying and heartbroken over him when we weren't together very long?