only time can heal this wound. getting to know who you are and feeling secure in your ability to care for yourself in every way, physically and emotionally, will set you up to feel secure in your next relationship so you do not repeat the same mistake. you need to be able to meet your own needs so that you are not searching for someone else to do that for you and then being put in a position to feel threatened when they are not there. when you are able to meet them yourself, you are secure, and if your partner can do that for you then that is icing on the cake.