Two fiances at once seemed a bit excessive...
Sarah had left her Welsh home under something of a cloud, and she wanted to return with flags flying. So she said she'd be arriving for her sister's wedding with a surprise guest--her fiance.
Only Sarah was the one to be surprised--or rather shocked to find Rupert Clare, her fiance, entertaining a previous girlfriend in the bedroom of his London home.
As luck would have it, the local squire gallantly presented himself as Sarah's intended, and he succeeded in making things infinitely worse... because Rupert showed up, too!