You can have dormant HCV. Exposure to hydrocarbon or halogenatedhydrocarbon solvents of your skin can stress your liver enough for full blown disease. Many have subclinical HCV at the beginning of infection. Going negative at the end of treatment doesn't exclude later resurgence of the virus. Vigorous sex, comenstrual sex, and bleeding gums (every pull a vacuum and see evidence of blood?) noticed or unnoticed, as well as any infected white blood cells or extracellular virus in saliva or semen, could lead to infection. This disease predates hypodermic needles, but perhaps not the prehistoric practice of tatooing. Otherwise, it's a VD.
Are you saying your treatment result was 'Svr?' If so, you probably have the antibody to Hcv but are virus free. If you are virus free, you cannot pass on Hcv
Sexual transmission of Hcv is possible but not common, more likely male to female than female to male.