Well, seeing that he is still all "Womanizer" like - even when he is aware of his "true" self now - I doubt he is someone like Peter Pan or any other boyish character. I think his counterpart must really be in love with himself and be all "Well, I'm such a great catch" like
What "Womanizer" Fairytale charas are there?.. I don't have a clue about Dr Frankenstein's women though