I have genital hsv 1 & never get cold sores. a man i dated says he now has a blister on his lip. can it be spread through kissing? he did not give me oral sex. i gave him oral but there was zero genital-genital contact. does my mouth carry the virus?

People are immune to new infections with the HSV type they already have, anywhere on the body. Having had HSV1, you won't catch it again, any where on your body. Still, it makes sense not to push your luck: best to not have direct contact with his mouth (kissing or oral sex) until his possible oral herpes has healed. But no serious worries even if such contact occurs.