What a way to end a part!
Personally Perry should know about Clark, he needs a really excellent reason to re-hire him. Letting Perry in on the secret helps.
On the other hand...
He should consult with Lois about this and I get why she upset. For nearly two years the man has kept this MAJOR secret from her and yet he's willing to immediately tell Perry.
Michael...22 episodes? Seriously?
Totally agree with DW about communication, its the lifeblood of any relationship.