I'll never forget in University, met a Jewish girl Galit, nice beautiful blonde. She took me to her house one day and before I could enter her Mom asked what religion I was and she said Catholic, which of course I hate religions now altogether..
Anyways, her Mom said he can't come in the house. I was so stunned because Galit and I hung out a lot for over a year or so and bam, "he can't come in." Wish I said something at the time, but that ended our friendship real quick.