Uh. The only thing that should be said about the two, is that they're dead.
That was either the shortest wedding ever, somebody got the wrong day or some other thing I can't think of. The reaction could have been different if they were step siblings, but it's kind of obvious they aren't. Bah. Worst way to do a cliffhanger ever. For once I don't want to have to wait for a next chapter on this one. Would have been triggered by the make-out session, if it weren't for the unfortunate reveal.