Gabe: *head explode* But since he doesn't know he'll just be all 'yay hope you're having a great time and not thinking about Mike - you're too good for them anyway etc etc' Because he loves his Zoe-pants.
Charity will bake her muffins and be all "Oh, is there going to be a wedding? Aren't you both cute together!" Because Charity loves everyone equally and if humans die then she's sad but, uh, she clearly doesn't go out of her way to stop it. Because she believes in the best in everyone, even Sins and Hell Princes. Silly, silly Virtue.