So without lesions in either location, he can never know where the infection is, though statistically, it is more likely oral, by far. The IgG test for HSV 1 misses 30% of those infected with HSV 1 so it’s difficult to know what to make of your test.
Half the people in the US between 14 and 49 have HSV 1 so if you decide this is an issue, it might be difficult to find someone wonderful in your life who is negative for HSV 1, truly.
The high value simply means he has been infected for a longer time.
People who have had HSV 1 genitally for 2 years or more shed virus on about 4 days out of the year. People who have it orally shed far more often.