No, not unless you both have open sores in your mouth.
It's very unlikely and little chance you will get Hepatitis C from kissing someone. Tongue or no tongue. I have been with the same person for 20 years. We have kissed each other at least 100 thousand times. I sure can't remember how many times a tongue was involved... but 5000 times might be a good estimate. My partner just got back there hepatitis C test results from
an annual physical....they don't have Hepatitis C.
Sooooo after this person kissed me ( who had Hepatitis C) for 20 years...
they don't have Hepatitis C. I think your safe.
Best to You
"did i give my boyfriend hepatitis c when we tongue kiss , he doesn't know i have hepatitis c , and we didnt have open wounds in our mouth."
Nope
Transmission / Exposure
How is Hepatitis C spread?
Hepatitis C is usually spread when blood from a person infected with the Hepatitis C virus enters the body of someone who is not infected. Today, most people become infected with the Hepatitis C virus by sharing needles or other equipment to inject drugs. Before 1992, when widespread screening of the blood supply began in the United States, Hepatitis C was also commonly spread through blood transfusions and organ transplants.
People can become infected with the Hepatitis C virus during such activities as
Sharing needles, syringes, or other equipment to inject drugs
Needlestick injuries in health care settings
Being born to a mother who has Hepatitis C
Less commonly, a person can also get Hepatitis C virus infection through
Sharing personal care items that may have come in contact with another person’s blood, such as razors or toothbrushes
Having sexual contact with a person infected with the Hepatitis C virus
Can Hepatitis C be spread through sexual contact?
Yes, but the risk of transmission from sexual contact is believed to be low. The risk increases for those who have multiple sex partners, have a sexually transmitted disease, engage in rough sex, or are infected with HIV. More research is needed to better understand how and when Hepatitis C can be spread through sexual contact.
http://www.cdc.gov/hepatitis/c/cfaq.htm