Just so you know, the antibody test misses about 30% of HSV 1 infections, so you may or may not be infected. To find out whether you are or are not infected, it would benefit you to do the western blot but you may not want to go that far with this. How long have you been having sex prior to this diagnosis? Sounds like you have not been using condoms, correct?
So my advice: get the western blot to see if you are infected.
Decide how much you don’t want to get this (I personally have never seen someone transmit HSV 1 through intercourse.) He can start on antiviral medicine and perhaps not using condoms.
Your information on viral shedding is right on.