Lack of physical affection in a relationship is an excellent indicator that something in your relationship goes wrong. If your wife shows signs of distancing or if she doesn't touch you and hug you as she did before, you need to do something in order to save your marriage and keep it lively and happy. Lack of physical attention can be interpreted in many ways, but you shouldn't overthink everything and make the problem even worse. Nonetheless, you should definitely take action and do something about it.