None of your symptoms sound herpetic to me. I think you've been having some contact with people other than your regular girlfriend and these contacts have you worried. You may be significantly more aware of these body sensations than you were prior to these contacts, but because of these contacts, your are observing everything that is going on with yourself in body locations where contact took place. This is not an unreasonable thing to do, but it does cause a hyperawareness that is probably misleading you. Since all of your tests were negative, I would strongly suggest that you believe the tests and move on with your life. These worries will likely take away from your enjoyment of your life and your partner, and they can become obsessive in nature. For now, please try to believe your test results, and when these thoughts and worries come into your head, push them aside and remind yourself that your tests are negative. Do this each time they intrude into your thoughts. I really believe your tests are correct.
Terri
woops I was trying to type that on a different area when I was researching burning lips. Ugh sometimes I swear my computer does the weird things to me.
I also forgot to mention he said the sides of the lips appeared to be cracked and gave me a medicine for it.
Should have said all tests were negative!