Why would you feel awful to have cold sores? 70-90% of people carry the virus.
Are you sure you do not carry the HSV1 virus already? Absence of any recollection of cold sores does not mean you do not have the virus.
Next, if you were infected, you'd know it! The lesions are likely to be quite bad upon initial infection.
In this case, the cold sore had healed so there was not really any elevated chance of infection. There is a low level of background risk in any kissing with a person with HSV1, but a very, very low chance per kiss!