Do things differently. It semms like a compulsive way of acting.
Don´t do things too fast, don´t get involved in sex too fast.
Try to be by yourself for a while and don´t jump into one relationship to another.
Sex is great but can´t be all in a relationship. Don´t lose yourself in a relationship, set some boundaries.
You might get so scared of lossing them because if you lose them you lose yourself.
You don´t have to lose yourself in a relationship because that is the easiest way to destoy it.
Hope it helps