Originally posted by: BOARD_of_command
Several possibilities:
-your friends have bad taste
-you have different preferences
-you're gay [img][/img]
I don't think it is a gay/ non gay issue. He has grown up with his sister from birth always seeing the changes, flaws, ect..... So, there is never a built attraction. Now, say his parents divorced and he saw his sister for the first time in like 13 years and she was now 18, that would be different..... he actually notices her beauty.