Personally, I would suggest you and your husband start regularly consuming L-Lysine supplements and cut back on your intake of foods with
L-
Arginine. (nuts, beer, red meat, peas, and many more). Secondly for your husband I would suggest he check out products from a company call "Forces of Nature". They have various oils he can put on his lips that help keep outbreaks from happening as well. This stuff is great. I used it all the time.