Herpes :: Asymptomatic Transmission Of HSV1 To Monogomous Male Partner

BF of 1.5 years recently had his first OB, culture came back positive (they didn't test for which type)  [I go in Monday to have routine blood work, going to request them add HSV 2] Physician did not treat him for  HSV as his 3 ulcers did not appear to be HSV to the provider. His ulcers were painless however his malaise, fever and chills night sweats for 5 days bout did him in. II have HSV1 since a child. I Have not had an oral outbreak for 5 months. I am very particular and persistently cautious at the first sign of lip tingle, as I  how contagious herpes virus is and outbreaks are frustrating.  Even through all my meticulous behaviors,  he recently contracted HSV1 genital. I am hypothesizing from oral sex 12 days prior while I was menstruating I must of have been shedding oral HSV1 without any OB sign whatsoever. ( generally I break out during menstruration in the past) timeline is the best fit his IgG is neg leading me to believe a brand new infection for him. I am devastated that without an active oral outbreak I spread this to my partner.
Lifestyle, eating and supplement habits to read up on to prevent future genital outbreaks for him?

How often is HSV1 oral shedding asymptomatic?

How likely am I to get it HsV1 genital from him now?

Are there any additional precautions to take the first year beside condom use, no sex during any hint or active breakout?

Over the years will be begin to shed the virus less?


Thank you