Answer:
People with poor self-esteem frequently feel unattractive, uncomfortable, or inadequate. Hypersensitivity is more common in those who lack self-confidence. They have a weak sense of self that is readily injured by other people.
Weight should be the answer
I know one is to get tested. Another could be to use protection that could prevent that kind of stuff. Then if you're already infected, you should tell your partner. And if you do sleep with your partner while infected, tell them to get tested.
I don't know about social cognitive theory, but three factors I believe are:
Family
Friends
Experiences
Hope this helps