It's not surprising that you are hsv1+ - the majority of adults are whether they can recall getting obvious cold sores or not. If you really are curious the next time your nose issue reoccurs you can get it cultured within 48 hours of it's appearance to see if it's really a bacterial issue or oral herpes that was wrongly diagnosed all those years ago. That's totally up to you.
So yes since you are hsv2 negative and your husband is hsv2+ then he had it before he met you and just never realized it. It's actually a quite common scenerio. So why didn't you manage to contract it over all these years together? It's as much about luck as anything - you just were never in the right place at the wrong time when your body's defenses were low enough for you to contract the virus. So what do you do now? Well that's totally up to the 2 of you. If you are done having children then if you'd contract hsv2 from your husband - it would just be a nuisance for the most part. Obviously just avoiding sex whenever he has genital issues has been going pretty well for the two of you so if you both want to continue on that way - no reason not to. If you know that now that you know that he has hsv2 you are going to be thinking about it and would just like some extra added precautions for awhile until you better adjust to the idea of this virus has been a part of your relationship for 10 years then ask him if he'd be willing to go on daily suppressive therapy to help lower your risk even more. Same with if you aren't done having your family yet - consider his starting daily suppressive therapy just because if you don't have to deal with herpes during pregnancy/delivery - even better. It's totally up to the two of you. Also if for whatever reason ( most times there isn't one you can pin down ) if he is starting to have ob's more often - suppressive therapy would help keep those down to a minimum for him too so that he feels more comfortable more often and there's less times you have to try to avoid sex.
Feel free to ask any questions you have
I'm sure I"ll get totally caught up here within the next couple of days!