There is a condition called Fordyce's condition, which refers to the presence of sebaceous (oil) glands on the pink part of the lips. These look just like what you describe, and they don't mean anything. I agree that they've probably always been there, but you just noticed. They are more noticeable if the lips are moist. They have nothing to do with herpes. You should ignore them.
If someone with an active cold sore performs oral sex on you, you can get whatever type of herpes is on the lip on the penis. Most oral herpes is Type 1.
Take care.
Dr. Rockoff