I wouldn't ever do anything un-faithful, not even in the least bit. I blog and I am a writer. My partner is very proud of me and he thinks I'm great at what I do, even when I don't agree. I don't ever show provocative photos of myself or have private contact with a person who has come onto me while we have been together so, he wouldn't have any reason to dislike or feel uncomfortable with what I do. I know how to keep it to a minimum, so he doesn't have to worry.
However, if I did do those things, I would absolutely stop if it made him uncomfortable. I wouldn't want anyone to feel upset and I would do whatever I could to make sure they don't.