JRuss, my WW did the same thing for a couple of months after I discovered the A. She even commented that she couldn't look me in the eye anymore that there was so much damage between us. Fortunately, that has changed and she does no look me in the eye when she's speaking to me, and I do the same in return.
Give it some time, and it may come back, but it doesn't make it any easier in the interim.
_____________________ Me:44 W:44 Together 22 Married 21 S 19 D 17, 15, 15. 7 EA/PA suspected 3/30/2016 EA/PA confirmed 4/5/2016 ILYBINILWY 4/5/2016 WW asked for Divorce 5/8/2016 (WW has backtracked)