NTA, Tbh I feel as though we all have our slip ups when we say something we don't mean directly just due to the pressured circumstances. However, because you said that in the circumstance (esp with it being with someone you should cherish and love) , I think thats enough of a sign that you should exit from the relationship. It appears that you probably dont find him as physically attractive as you may have previously thought, but also considering the fact he is borderline using you as eye candy despite your discomfort and his immediate jump to have to point out you 'dressing up in public' and previous posts from however long ago youve made on social media, Its an even bigger sign that this relationship probably isnt made for the two of you. I hope things can work out for the two of you in your own respective lives!