Post herpetic neuralgia would not be all over your body like what you are describing, not at all. With genital infection, it is most often limited to the leg.
Again, I think it isn’t likely that you would have a 2.77 index value just two weeks after the encounter. The difference between the two index values is in no way significant. I think it is quite clear that at that level you are HSV 1 positive, yes, based on some new study data that we have but if you want to do a western blot to be quite sure, you sure can. It is certainly possible that you partner gave you HSV 1 earlier in the relationship, yes, but it would be very hard to prove given your index value – could have been any time in the past.
I think it might be wise to talk with your general doctor about your crawling under the skin feeling all over your body and see what he/she says.