i think it would be a pretty cool idea if you could change who gets married since there's no real, like, "canon" relationships beyond the already married folks (even the ones that are implied, like
are a little shaky) so it'd be cool to mix and match and be a bit of a matchmaker.
it brings to question what happens if you divorce someone and you want to marry someone you married off, though. what happens with them? can you also break them apart and erase their memories? ):