Social media and my bf 🙄

My bf has always bugged me to post couple pics on Instagram/Snapchat etc. I have posted a few here and there. But I never get the same in return. He’s so adamant about keeping who he’s dating a secret, therefor he never posts pictures of me... I don’t know if he just thinks I’m not pretty or he’s insecure with the relationship.... I’ve talked to him about it a few days ago and he just told me he doesn’t want his friends to ruin our relationship... makes sense but still no reason to hide who he’s dating. Thoughts???