Yes, HSV-2 (genital herpes) can spread through skin-to-skin contact even if the person with the virus is asymptomatic. However, it typically spreads in genital areas during sexual activity rather than from stomach to lower back contact. It's important for both partners to be aware of their status and take necessary precautions to reduce transmission risk. If you have concerns about possible exposure or symptoms, consider consulting a healthcare provider for guidance and testing.