Figured it was something along the lines of a threat, that even a devil would be scared to tears with you on their trail.

...Demons can love, even love humans. But I'm still not a human myself, and I don't want to be seen as one. If what you meant was that only people who are...good at heart can shed tears? Then yeah, you botched that wording, big time.

'Devils never cry' sends a pretty specific message, after all.