Of course, you've already figured out that your doctor is wrong and the 1.08 is equivocal, not positive.
Are you sure your "full panel" included herpes? There is actually no such thing as a full panel - it's one of the biggest myths in STD testing, and a full panel means whatever the doctor wants it to mean, even if you say, "Please test me for everything."
Another issue is that the hsv1 IgG misses 30% of infections. Your partner could have it and test negative, consistently.
Whether or not you were tested before, or you are newly infected, or are getting false positives - I don't know. There is a western blot test you can take, but it's expensive, and you can get it through your provider, though I suspect he doesn't know about it, and would fight it if he's calling a 1.08 a positive.
You can also get one through Terri Warren. She's a herpes researcher and former practitioner who offers them, but you'd have to self pay. https://westoverheights.com/getting-a-herpes-western-blot/ (Her site seems to be down at the moment.)
I'd suggest getting copies of your previous tests, first. I'd also ask why it matters. What would it change for you and your partner? You've been together this long, so what would it change?