
Probe him a bit. See what he thinks of shirtless frat guys. Ask if he watches porn - porn often increases sexual thoughts about others and decreases respect for women. Ask him why he doesn’t like your clothes. Casually bring up politics, see if he seems reluctant to share his real views. Sometimes, desire to change your clothing stems from religious or personal beliefs, but sometimes it stems from disrespect and a desire for control.
I come from a religious background, and my bf comes from a conservative family. He likes the way I dress because it’s modest by his standards and in line with his values. I like the way I dress because it’s practical for spontaneous running. Any time he compares me favorably with women who dress revealing, I remind him that awesome women I’m close with dress that way, and that they deserve respect.