Responses

it is probably just a representation, wearing the apron, opening the door in that way and preparing the food is all generally attributed to a housewife who lovingly prepares the house and waits for her partners return. It could mean that he has so completely accepted and loves his partner that he is at home there and has taken up that role. . . or it could just be fan service, he looks pretty cute in it. . . yeah its probably that.
what the hell is the apron for if he is just gonna heat the food in the microwave that her mom made??!!!