Over 70 Years
Queen Elizabeth and Prince Philip almost never touch one another, but they are still together even after seven long decades. As you can see, it is not a requirement to be touchy-feely with each other in public.
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The Kids Included
While it is not that common for royal couples to be touchy-feely, let us find out if the same rule is applicable to kids and parents. It is a case to case basis, but many remain reserved even with their kids.