i think the first one. He is blaming himself for his actions and not Eve. Eve didn’t even know what he was feeling was jealousy and possessiveness for Adam, he even just said what he learned and was told alias he was a weapon and mean to an end.
Adam is disgusted with himself for his selfishness and disgusting behavior w Eve during his recovery.
Omg you're right it is the first one imo cause there was a dream kinda flashback of current Eve in the past idk chapter where he saw Adam hanging himself. It wouldn't make sense why Adam did it if the reason is the latter
Either he wants to feel that he is still of use and can do his duties or he wants to blame Eve for his condition