Dasia, just never stop being you. Some people are just clueless to the world around them and don’t get it, any of it. It was definitely VERY rude and inconsiderate of him to keep carrying on like you were ‘bros’. You will always find people like that in life. When you do, write them off and move on, regardless of how sexy and desirable he might be. If he doesn’t understand after you have explained it to him, he is not worth the effort.
Good luck to you in your transition, be well and stay healthy.