Recall his earlier remark that his purpose had been to become a part of Finny.
Answers 1Add Yours
By this point in the book their relationship had moved from obsessive to really mentally unstable. These two guys wanted to be each other. Sure there was the underlying homo-erotic sexual tension but their obsession to inhabit each other's very being became an overriding force in their relationship. Finny's death meant the death ofGene's identity as well. Yes, it's rather creepy!