Herpes isn't passed by saliva unless the saliva has come into contact with a sore.
Also, its not passed in blood, so blood has nothing to do with it.
I agree that this is a very slight chance, and you should ask your doctor for a type specific IgG blood test to find out if you already have hsv1. Over 60% of people do, and you don't have to have a cold sore to have it.
Yes, this question is best for the herpes forum, but I wanted to clarify things.
There may be a slight risk however it isnt a major one. The fact that saliva was used from the infected person may well mean that it was passed. However, Herpes can be passed even if there is no sore/scab in very rare cases. Herpes cannot be passed through saliva (chances are 1-2%) unless the saliva has blood in it. So your quite safe on that front.
However if Oral was performed (in this case it wasnt) then there would be a high risk.
Hope this helps!!
Magz
You need to post this question in the herpes community-link above. They have a lot more and better info for you there.