My boyfriend lied to me about watching porn?

I'm sorry but your boyfriend sounds like a immature douche bag. As far as the porn goes, there is nothing you can really do but except the fact that guy (at least 99% of them) have and will watch porn, he is ling to you because you hate it and doesn't think it is worth mentioning if it is going to start an argument. Also let me just say that if a man is taking pictures of you half nude without your consent that should be a red flag showing his intentions and his lack of respect for you, find a guy who loves and respects you, you deserve more...