@blueblackgreen I've been thinking about this:
I made it crystal clear I don't like those pages and they aren't anything what I'm like so why is he with me
This is how I felt, as I said before, when my BF was following and liking pics of gorgeous women with no mum tum and big boobs. But this morning I've been thinking about men I would "like" if someone gave me all the Insta feeds and told me to click on who I fancied... they would look nothing like my BF. They'd be tall, have some good tatts, and be nicely toned. My BF is only a little taller than me, no tatts, struggles with his weight a little so usually has a bit of a tum. But I fancy the pants off my BF, we have a great sex life... the men I would find attractive on social media are completely divorced from my real life and don't impact how I see him at all. Real life attraction is much more complex and is influenced by personality, connection, etc.
I think the issue for me, and possibly for you too, is firstly insecurity. Being hurt before by your ex, and possibly other past trauma, is really damaging and leaves us much less resilient so we can't brush this stuff off. But this is the problem with social media, everything is out there now. Previously our blokes might have seen someone on TV or in a magazine, thought they looked hot, but we would have known nothing about it.
When you're in a relationship, I think you have a responsibility with social media to remember that although it's not "real", like your BF said, it can have a real life impact. So out of courtesy, he needs to not be liking and following and possibly communicating with those accounts. And then for our own happiness we need to work on our own insecurities, which is why I recommended that book to you.
Sorry for the long reply, your thread has just really connected with me!