People often say "allergy" when they mean "intolerance", even if they ought to know better. It doesn't mean they're liars. It means they're using non-technical language.
They didn't say they are allergic to every form of nut, simply that they're allergic to nuts - it's entirely possible that they mean that they're allergic to one or more varieties of nut that you'll find in a tin of mixed nuts, and anyway it's pretty impossible to get already-shelled and roasted nuts without cross-contamination from those other nuts that you can't eat. Why risk it?
I'll note that they don't actually say that both they and their partner are BOTH allergic to nuts AND milk - just that, as a couple, they have this mixed set of allergies. However, even if they are both allergic to both sorts of things... milk and nuts are two of the most common allergens in America. 1% of the population has an allergy to nuts. Milk allergy is less common in adults than in children, but if you add the percentage of adults who are allergic to milk to the percentage who are simply lactose intolerant, you're getting a hefty chunk of the population.
It's really not that rare for two people to meet who happen to both have the same allergy.
And for all we know they bonded over their shared allergies. Maybe they even met in a support group for people with nut allergies or something.
no subject
They didn't say they are allergic to every form of nut, simply that they're allergic to nuts - it's entirely possible that they mean that they're allergic to one or more varieties of nut that you'll find in a tin of mixed nuts, and anyway it's pretty impossible to get already-shelled and roasted nuts without cross-contamination from those other nuts that you can't eat. Why risk it?
I'll note that they don't actually say that both they and their partner are BOTH allergic to nuts AND milk - just that, as a couple, they have this mixed set of allergies. However, even if they are both allergic to both sorts of things... milk and nuts are two of the most common allergens in America. 1% of the population has an allergy to nuts. Milk allergy is less common in adults than in children, but if you add the percentage of adults who are allergic to milk to the percentage who are simply lactose intolerant, you're getting a hefty chunk of the population.
It's really not that rare for two people to meet who happen to both have the same allergy.
And for all we know they bonded over their shared allergies. Maybe they even met in a support group for people with nut allergies or something.