I'm not sure why you would run away from someone who's going through a low morale patch, we all get them. Seems like it would be the mark of a shallow individual to just abandon people.
Lying to me is a tool that has to be used effectively. It's a fine line where if you do it too little, people think of you as a tool or you hurt yourself. If you do it a lot, nobody trusts you. It's a socially something that should be expected, but something for you to consider to yourself.
> The problems at work often comes down to morals
It is relatively uncommon to use the singular moral in a sentence, in my experience. You can maybe remember this by associating it with the idea that people have a set of morals, not just one.