I think Adam was holding on to Eve so he can stay a Guide. That’s all he wants to do; be a soldier. He’s using Eve’s affection as leverage. Eve is difficult to manage and if he only wants him (Adam), they’d be forced to fix him and let him be what he knows how to do best. Eve is just a tool for him here and when he realizes it’s useless to hold on because he’s “damaged” and can’t work, he gets depressed and tries to end his life. He probably didn’t develop feelings for Eve until they moved in together. He was protective of Eve but not in love like Eve was. Probably why Eve erased both their memories and not just Adam’s. He was too hurt to want to remember how Adam just used him and didn’t reciprocate his feelings.
I think Adam was holding on to Eve so he can stay a Guide. That’s all he wants to do; be a soldier. He’s using Eve’s affection as leverage. Eve is difficult to manage and if he only wants him (Adam), they’d be forced to fix him and let him be what he knows how to do best. Eve is just a tool for him here and when he realizes it’s useless to hold on because he’s “damaged” and can’t work, he gets depressed and tries to end his life. He probably didn’t develop feelings for Eve until they moved in together. He was protective of Eve but not in love like Eve was. Probably why Eve erased both their memories and not just Adam’s. He was too hurt to want to remember how Adam just used him and didn’t reciprocate his feelings.