It was a very intense love and it hasnt even been a year since you separated. Dont think too deeply into your recurring emotions- they are a consequence of a very long association. Its just unresolved feelings post-breakup. Over time, those traces will disappear. You know why you arent together anymore. The past is the past. Would you go back to him if you didnt have a loving partner now? Let this go – embrace the love you already have in front of you.