Hi op,
It’s a complex one. On the one hand I completely understand how you feel. It is objectifying and disrespectful. But then again, I also agree we can all do that at times without giving things much thought or having intention to objectify or hurt.
When I reflect about my fantasies, they aren’t all wholesome and about my DH. At the same time, I wouldn’t actually want to live out my fantasies. They are just that. Thoughts, or maybe in his case material, for sexual stimulation.
It’s upsetting when we stumble across the fantasy of others, because we realise that their fantasy rarely includes us. But then why would it? They have us. This can induce feelings of jealousy or hurt, which is normal and understandable. We also have the illusion of this pure, loyal, honest, perfect person who we chose to spend our lives with spoiled. But having those expectations of someone else is unrealistic, especially when if we really analysed ourselves there will be things we don’t want our partners to know about us.
I don’t really want to know what my partner masturbates to. Unless it’s my lovely Facebook profile pic, anything is going to hurt. Can you image the post: I got home today and walked in on my husband masturbating over soft porn, pictures of women of around 30 who had posted their own photos for fun and he could prove the site he was using was ethical - I was so happy. Yeah, it’s not going to happen.
Finally, one thing I’ve learnt is that we only ever know so much of a person. Sometimes we see snippets of a person we don’t like in the people we love and we don’t recognise that person. But they can be both, simultaneously. That guy you love is there, he has a side that likes what he likes, but he hasn’t really changed. Can you tolerate that bit about him now that you don’t like?
It’s a shock op. Perhaps speak to him about your concerns about objectification of women and also about where and when he is masturbating, so he can ensure privacy?