Have you ever seen your brother ?

I know I know it sounds sick but when i was 12 and bro was 9 we played a game. some time later when it was bedtime and we where in pj we stared to play fight again. i grabbed his pj and the fell down. i did not see that much but he said he wanted to see me to make it fair. i said no which upset him as it was not fair. my friend say i gay now i am not because i got a girl friend. but i asking what would you have done? and have your or your brother seen each other ? and turned gay? (just to prove to friend).