Why is my boyfriend so obseesed with porn now.we try new thingz i due wateva he wantz .plz help?

evry lil chance he gets hes on it on tha fone on my computer..he dusn evn sleep n tha bed wit me nomree cuz stays up all nite watchn it ..am i duin sumthn rong or is there sumthn rong wit me plz help ..we evn due it all tha time n he dusn evn last that long he gets soft easly