How can I accept myself?

あなた don't except yourself because your afraid of what your family will say.The pressure made あなた break up with your girlfriend.Your the only person who knows yourself.Do あなた except yourself?Is your family biphobic?If あなた don't know ask them.If they are then your going to have to wait until
your 18.And あなた can't fight it.Bisexuality is there
FOREVER.It's not a
disease/disorder.It's not a choose.Nor is it a sin.Humans
and 動物 had it eons 前 and have it now.Now about
your girlfriend.Did あなた 愛 her?Get back together with her
if あなた did.Say sorry and explain why あなた broke up.She
could understand and get back together with you.She
might not want to.You can have other girlfriends または
boyfriends.There's plenty of people out there that may be
right for you. :)

It seems to me that あなた have already accepted yourself; あなた just want others to accept you. The only way to have this is to tell them about your sexuality. If あなた are ready for it, tell your family and フレンズ and talk to them about it. Make sure あなた go at a pace あなた are comfortable with and sit and discuss the subject with whoever carefully in a way that あなた are happy with.