The Oedipus complex.

Electra complex

The Oedipus complex is a psychological concept where a child has unconscious feelings for the parent of the opposite sex and feels rivalry toward the parent of the same sex.

The term psychologists use for this complex is the Oedipus complex. It is a concept introduced by Sigmund Freud to describe a child's feelings of desire for the parent of the opposite sex and a sense of rivalry with the parent of the same sex.

The Oedipus complex is the attraction to your parent of the opposite sex and the hatred of your parent of the same sex.

Oedipus Rex killed his father and married his mother. (In his defense, he didn't know they were his parents.)