Would you be okay with it?

My boyfriend isn't the type to show me off and I don't like it but I put up with it because I love him. I feel like he's falling out of this relationship but he's always telling me that we're good and he's not leaving. Well when we first started dating, he would be on Twitter retweeting song lyrics and those small sex videos and stuff about fucking. I told him that I didn't like it and he stopped doing it because "anything to make me happy". And now he's back at it and I brought it up and we had a huge argument about this. He said social media and names in bios don't mean anything and I know they don't but should I be upset that he retweets things like if he's a single guy or am I overreacting?