That's good

I was on my way out off work, M pulled my hands and smiled " i heard you are coming to work day shift" . He talked so low as being afraid of some one would hear the conversation.
I said" yeah ! i need a change"
He wouldn't let my hands go " you are coming to us"
I smiled back at him and felt lillte uncomfortable al thou i did not completely comprehen what he meant " us"
He finally released my hands " That's good"
I started walking away " Thanks M"
As i left the building and thought about what i just heard and i concluded " That's good" .
It is just simple as that.