social media relationships

I know social media shouldn't have an effect on our relationships but my SO flaunted his last relationship but doesn't post nothing about me he used to be an attention seeker on social media but now that he's with me he says I don't want to post because ppl doesn't need to be In our business, I do agree but me I don't post who I mess with I just write stats about my SO I had this feeling that is he ashamed to post me or is it he keeping me a secret idk maybe my own insecurities because he a great guy personally but I'm kind of worried  😩