It sounds like a long distance relationship. If it was, then it was only a matter of time and none of this is actually your fault.
Two points.
Point 1) You sound young. How old are you?
Point 2) Men don't leave a girlfriend until they have a replacement. Unless the woman is mentally unhinged, emotionally unstable, or so disruptive that she unreasonably complicates his life. You are none of those things. Young girls are always clingy and somewhat over analytical in relationships. Its just fear and lack of experience. It will go away with time to be replaced with a more calm but Jaded outlook on life. Since in my opinion, you weren't being abnormal, its my opinion that he simply wants to date someone new that he had his eye on. You will replace him with someone better if you choose wisely.
Riki
Two points.
Point 1) You sound young. How old are you?
Point 2) Men don't leave a girlfriend until they have a replacement. Unless the woman is mentally unhinged, emotionally unstable, or so disruptive that she unreasonably complicates his life. You are none of those things. Young girls are always clingy and somewhat over analytical in relationships. Its just fear and lack of experience. It will go away with time to be replaced with a more calm but Jaded outlook on life. Since in my opinion, you weren't being abnormal, its my opinion that he simply wants to date someone new that he had his eye on. You will replace him with someone better if you choose wisely.
Riki