I have a really big problem that can change my life forever?

for years now ive(boy) been hiding a secret from my famaly. i have told 2 0f my friends. the first was my best friend(boy) and i found out he was g7?y. im not g7?y, im byyyyyyyyy. and things happend and were not friends any more. my life is better with out him, im really happy. next was mybest female friend, and everything is fine she xsepts me for hoo i am. som times i tell her hoo i like and she tells me hoo she likes. did i minchin im in 8th grade. my sister for like 4 months now have been asking me if im ggggg and i say no. one day i was drawing a couple of desings, fashion, and i showed her and my brother and my brother was like mad i was drawing that stuff and she said dont say that we might have a versachy in our hands, and ticked me the $%#@ of becus he was a gay desingners that past away. i dont no wat to doo should i tel her or just live a secret life and get maried with a lady but have a secret life. my family hates ggg people excepther. my dad hates people hoo steel and hoo r ggg. remember im byyyyyyyy not ggg.she reay ticks me off. but the past 1 1/2 month i have been geting used to being ui no wat. so wat should i do.