i don't understand how to get past the part where eve is trying to get back a part of himself T^T
I'm sorry you're facing difficulties! You have to treat him with the emotions connected to green color - greed, balance and so on. It's hard to confuse with blue emotions (sadness, calmness, ...). Green answers are usually suggestions about fixing things, restoring balance, being possessive and blue are more timid, full of concern and sometimes helpless.
I hope this helps! We (with Glow) will try to make negotiations more comprehensible in an update soon ♥