I also confess to a certain amusement over how Gilbert, in his extreme thirstiness, seems to substitute Lawrence for Helen at one point once he knows about the family connection:

I took a secret delight in pressing those slender white fingers, so marvellously like her own, considering he was not a woman, and in watching the passing changes in his fair, pale features, and observing the intonations of his voice, detecting resemblances which I wondered had never struck me before.