All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is not allowed for a husband to abandon his wife in bed for a long period that may harm her and cause her temptation without any religious reason. It is also forbidden for him to watch pornographic movies. If the husband’s situation is as mentioned, then his wife should advise him, remind him of her right in his sharing her bed (i.e. sexual intercourse), and try to stop him from watching such movies. If he comes back to the right path then praise be to Allaah, otherwise she has the right to ask for divorce due to the harm caused to her by his behaviour. Moreover, such a person may be a reason to spoil the manners of his children. For more benefit, please refer to Fataawa 83052 and 86307.
Allaah Knows best.