It's not valid reason yet, different backgrounds have different references and just like he's not understanding yours, you may also be not understanding his as well. So it's best for you to tell him yourself about your references. And fashion wise, most men do not give much thought to fashion as we wear what we found at the top of our drawer l. But if that's bothering you, go shopping once and tell him "this clothes look good on you" and tell him subtly about what you like seeing men wear. I hope my advice helps you, cuz in the world full of lies, if you have a one true love and losing it for ridiculous reasons like the ones you mentioned is stupidity