Fan Casting Alone Among the Couples in Sort by Tropes

There's nothing quite like the presence of many happy couples to rub their single status in for the lovelorn, whatever their reason for being single. This can be a scene with an improbable number of couples in, say, a park, or the character particularly noticing couples wherever they go. This tends to be either a crowd of couples the same age as the character, or a vast range, from young lovers wooing, to Happily Married couples with perhaps a baby, to still affectionate elderly couples.