From my perspective, he’s communicating that he’s uncomfortable with the fact that your exposing your body in a certain way’s(such as clothing with a lot of skin showing, wearing tight clothing) and feel’s like your doing it to cope with feelings of inadequacy on your part, he also feel’s replaceable to you as a partner due to the fact that you have many people who fawn over you and who you show yourself off to willing to take his place which makes it feel he can’t fully express himself at 1/?
risk of you finding some else due to if he possibly says something you don’t like even if it’s just how he feels. He believes that your degrading yourself and putting on a bitch like mask to protect yourself from others own words, many people lash out on those they care about when they feel threatened to put emotional distance and feel more in control. To go on further, he also states that the love between you guy’s feel performative instead of authentic. 2/3
Alongside, speaking to other men(if he’s showed discomfort, communicated it, has a reasonable reason for being uncomfortable about it), speaking about previous sexual encounters and seemily being proud about it(which some people can see as humiliating when their partner talks about it), and it makes him feel ashamed about it when claiming him as his girlfriend. That’s what I’ve gotten from his text, I don’t know your side so I can’t really give much a concrete opinion.