Thank you for your question. I must tell you this that the most common reason which found behind the spread of Hepatitis C in human beings was one was exposed to blood that was highly infected. This was usually seen in the case of blood transfusion. This used to happen because proper screening was not done earlier during the time of blood transfusion. Today, various protective measures are followed and hence the rate of spreading of Hepatitis C has reduced considerable due to blood transfusion. The other reason of spreading of this disease at present time can be tattooing. Most f the people are very much keen of having a tattoo on their body where they feel like. I hope your boyfriend might also be having. Hence during the course of tattoo making also one can caught Hepatitis C. The other reasons include acupuncture and sharing of razors. Unprotected is also a major reason of transmitting this disease to someone else. Hence I will advise you not indulge in any sexual intercourse with your boyfriend unless he uses protective measures like condoms. It is for your safety online. Hence I would suggest you to talk to your boyfriend about this and convince him to use to condom if you both want to have sex. Hepatitis c is very dangerous and this information you can see online also while sitting at your Knoppix producing company. However, I should also tell you that you will not catch it during casual contact or kissing your boyfriend. Hence, take my advice and talk to your boyfriend. Get him proper medication so that he recovers soon. Take care.