coldsores and giving head

right so im both virgin and have never given head before... im seeing this guy and weve kissed and gotten handy and i really want to give head. I had a coldsore on my lips last year and nothing since (i dont have anything down there) just hsv1 i think. but ive read stories of it guys catching hsv1 on thier genitals through oral. i understand yes you should disclose but at the same time how many people have had coldsores as a kid and or dont even know rhey have it and therefore dont care and heres me freakin tf out. im conflicted af