Hi!
Im not trying to minimize your concerns, but this is the first time I have ever seen anyone be so concerned about cold sores. Here is my story, I have gotten cold sores (or fever blisters as we called them here) since I was a kid. I spent my entire life never feeling I needed to share that with anyone. If I got a fever blister, brought on by either way too much sun, or way too much stress, I just didn't kiss anyone. I am 50, have had numerous boyfriends and have been married twice now. My first husband, married to him for 15 years, never got fever blisters, ever. My second husband, who I was with for 7 years, also never came down with them. And he wasn't exactly the healthiest person either. A total non issue.
It was just like if I had some sort of cold,or illness, I wouldn't kiss anyone until it was gone, so that person wouldn't catch my cold. Same applies with fever blisters.
Honestly , there are many more things to be worried about contracting than oral herpes. It is only an issue if you have pre determined you are going to make it one. Which is what it kind of sounds like you might be doing :( .
And additionally, if I ever feel like I have one that wants to make an appearance, (maybe once a year??) I take acyclovir tablets right away, and it never surfaces.
I hope you don't worry yourself so much about this! :) You do realize that it is estimated that 2/3rds of the world population has oral herpes right? If you end up getting it, I promise you it is far from the being the worst thing you can get in your life. I would be more embarrassed by a big pimple on my nose, or a mole growing above my eye! :)