I am sorry that you are experiencing this. I seem to agree with you on how this person is feeling. There are a lot of people who like to stereotype, and it's not fair.I would probably talk more about this issue with this person. Maybe this person needs to be educated on it. Furthermore, I would tell this person that you did not tell him/her before because of the way it is being handled now. If this person cannot except you for who you are, then maybe you should move on. You should never be ashamed of who you are.