Another who is no royalist, but that's a hell of an innings and a lengthy marriage which genuinely appeared to still be a happy and strong one. I know divorce would never have been an option in either of their minds had it not been, but that really didn't seem to be the case.
I wasn't a particular fan of Prince Philip, but the passing of anyone is incredibly sad for any family whatever the age and circumstance so my heart does go out to them at this difficult time especially the Queen. Similar to pps I saw how my own grandmothers struggled to keep going following their own husbands deaths after long marriages and the effects can be shocking.
I met them both on a few occasions through initially my fathers work and then later my own. They were always polite and friendly in person from my brief interactions with them, and it's those meetings that also inform my feeling that it was a happy and supportive marriage. Philip was always gentlemanly and gallant towards the Queen and it didn't feel like it was out of duty or for public perception but truly because he loved her deeply.