Now that Toby has lost so much weight, if he presses Kate to stop overeating, it won't look good. I think this is what is going to happen, he will come home earlier one day and see her eating mac donalds or something, he will request that she stops with the junk food, she will explode revealing the message she saw from a strange woman in his mobile phone and this will be the beginning of the end. Toby has said that his ex wife who was slim was not his type, but I don't believe that. I think that he convinced himself he can't have a slim woman anymore because he was overweight and now that he is fit he will see things a different way. If his friends at the crossfit tell him that his wife is bringing him down and she is ruining his being healthy, I think he is insecure enough to fall for it. All in all, I think this couple was doomed even before the baby and they should never have a kid.