I’ve recently been getting into Undertale and one of the things that confuses me is how many emotions Flowey actually has. because, I mean, he finds it difficult to return the emotions his parents have for him, but he also has no problem being frustrated? or calling people stupid? and in the end of genocide run he’s crying, which is generally an emotional response. he’s also kinda nasty about Toriel taking in kids after him in the echo flower. *shrugs* IT IS A MYSTERY.

passivechara:

I think he can totally feel emotions, just that without a soul he lacks natural connection to those emotions, especially compassion/empathy.

I’d imagine it being like your body suddenly forgot how to breathe on instinct and suddenly every breath you had to take was a conscious action. But by the end of the game I think Flowey learns how to feel compassion again even without a soul to ground him. 

the experience changed him to be invested in others happiness. 

It just takes a lot of time and experiences to relearn how to “feel” again.