I have read that herpes can be present in saliva, and I am wondering if I kiss a person with a genital herpes outbreak could the virus be in his saliva, or is that only true with oral herpes?
I'm sure you've found an answer to your question already, but yes, it's quite possible to catch herpes from someone who has genital herpes. If you kissed someone who had genital herpes on the mouth only, then no, you wouldn't risk infection. However, if she has oral herpes (which cause cold sores) then you could contract that.
Try these links and see if they help:
Herpes: Knowing the Risks
Genital Herpes: The Basics