don drapers secret life

So ... Betty Draper is starting to get an inkling of Don's dark and secret past on Mad Men. In Sunday's episode, she found the box with all his secret things. Really, you'd think he would keep it in a safety deposit box or something. You can't just leave that stuff lying around the house, even in a locked desk drawer. Someone's bound to find it, just as Betty did.

My question is what will Betty do with this important information? She' s already been stung by Don's affairs, and now she's got this to contend with.