Where did he lie?

Her words:

> "At the beginning of our relationship, he said that he didn't like to watch porn anymore since he was in a relationship."

That is not the same as "I will never watch porn again". He literally said, at that time he didn't like to. The circumstances of their relationship have changed, and they are now spending less than 3 days a week together.

So again, where is the lie?

Now I agree demanding nudes is shady af. BUT shes the one trying to control what he watches. IMO the better response would have been for him to tell her to fuck off with her controlling behavior, and if she has a problem with him masturbating, she can leave.