How do u deal with a husband who is so obsessed with porn?

Well! If he watching porn like a daily chore even when you are around then you need to talk to him. Tell him that this habit of his bothers you. Tell him that if he wants to watch porn watch it when you are not there as it affects your feelings for him. Like, if you think you both wish to watch porn while lovemaking then it is both of yours will but one cannot ignore one's relationship on this. Since you are making a query here, which means that it is bothering you, so I guess you must talk to him.