Board Thread:General Discussion/@comment-27677820-20160131035943/@comment-27724045-20160213001139

Think about it like this: The tears at the start are tears of joy, Asriel is overwhelmed with joy that he has become whole again.

From there on, his sympathy for others takes a while to return.

Yes, Asriel is as nice as we all think he is, but upon becoming a flower, he lost that.

Also:

Flowey tried to commit suicide.

suffice to say,

it didn't work.