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How to accept your boyfriend's interest in pornography 
Talk to your boyfriend about it. 
Have an open and honest discussion about how his porn use makes you feel. Let him know what you're thinking and feeling, what doubts you have, and ask him some questions about his views on pornography.
You'll feel better if you put your feelings out there and let him know what you're thinking and feeling. If he respects you, he'll respect your views and will take the time to listen to you.