Two weeks ago my boyfriend of over a year sent me a tweet about an announced upcoming video game. I don't use twitter and to find the tweet again later, I opened his twitter page on my iphone's safari knowing he'd have retweeted it or something. For some reason safari shows you people's twitter accounts out of order, so I didn't find the tweet but I found out he was very different than I thought he was before we got together.
I'm not sure how it chooses which tweets to show you, but they were all about how he was mad a hot celebrity got a boyfriend, what he would do for her instead, or quote retweets of women's selfies with suggestive titles saying things like "can i see?" referring to her ass or something. I know we weren't together at this time, but if I had seen this kind of thing from him before we got together I would have never went out with him.
I asked him to have a conversation where I basically explained how I felt, reassured him I wasn't mad he had a past before me, but I don't really feel like we have shared values and I kind of feel worried he objectifies women and has a kind of parasocial relationship with celebrities, everything just rubs me the wrong way. I said that I don't feel like he's a bad guy but I think maybe he would be a better fit for someone else, joking that maybe I wouldn't even feel this way if I was obsessed with Jungkook or something.
He felt comfortable to open up and from this conversation I learned he unfollowed all these women he interacted with like this when we got together. I said you just unfollowed these people you talked to frequently? Were they your friends or anything? He said no he didn't even respect them, which he said sounds bad but they didn't respect him either. He also said he never acted this way with me because he knew I "wasn't like that". He also said a lot of it was performative, and he realized I'm so "good" it makes him better and feel more like himself, because he's not proud of this stuff and just didn't know better. He mass deleted a lot of his tweets and privated his twitter.
I want to clarify that I don't care about my partners having exes, and I would hope that they treat them kindly and with respect. But this is really bothering me, I can't tell my friends because I know they would be grossed out and there would be no saving him from their judgement. We've been together a while now and I feel like this doesn't seem to be a problem since he won't do it while we're together, but I can't shake that I feel weird about it. What can I do?
TLDR; I found out my boyfriend and I have different values when we're single, I can't seem to move on and feel bothered even though we talked it to death together.