au where, in an attempt to get out of marrying fen, eliot casts a bonding spell on him and quentin (with or without q's permission, its up to you) with the intention of reversing it... only to find out that in fillory, those spells become permanent. and that he has to marry fen anyway. queue the three of them trying to figure all of this out, with q and eliot both not allowed to leave fillory and all of the other issues of the series still happening.