I doubt that genetics can be explanation for situation in which you are. Of course genes do influence many things but unfortunately human beings and their behavior is far more complex to be explained by pure genetics.
What you miss is bigger picture. It is almost 100% that you are coming from emotionally dysfunctional family. So basically you are not by accident target.
To fully understand where you are standing you must understand dysfunctionality of your family on one side and psychology of that guy that groomed you (for example you still do not fully understand why he pulled from you when you were 11 and sadly you still believe that his feelings were genuine).
It would be smart to seek professional guidance in those matters, I am not saying that you can be reborn as another person and start new life; but at least to be able to really understand yourself is worth of shot.