I think youre reading too far into it.
I got the same thing - he fixed the bat signal, got a clean slate, and took off with the woman.
As someone else said, why would Alfred put him and Selena together when he had never seen her or them together?
Yes THis, list time Alfred talked to Bruce, he fired his ass and they talked bout Miranda and how he would be good with her, Alfred never knew about catwoman, and in the final scene its clearly bruce and catwoman
You guys are crazy... He did know about Selina... Bruce was looking her up on the BatCave computer and Alfred was there...
Then there was a conversation between Alfred and Bruce and Alfred says "She sounds like your kind of woman" or something to that effect about her.
Also, Alfred DID see her because in the beginning Alfred told HER to take the tray of food upstairs, which is when she steals the necklace.