Let them know that I'm not what my Dad thinks

There has been stuff that has been happening in my family, a conflict I must say, and my dad has been telling them to his friends at work, saying that I’ve change into this, into that, something bad… cause I had a boyfriend

:(

Its not even true, I had a few boyfriend’s before that they dont even know about because if they did I wud be in this situation already then, but im only like this cause theyre forcing me to break up with him, and were foreigners here and im pretty much known to every1 who are the same nationality, and they all look up to me cause im the oldest 1 thats a girl they know and all the lil kids loves me and look up to me and respects me, and now their parents wont even let them see me anymore :l or even talk to me cause my dad spread things to their dad and ofcourse they’ll share it to their wives… and now every1 looks at me like a dirt, my bestfriends mother wont even let her see me anymore…

What can I do to change their minds that im not as what my dad said? cause my parents cant even trust me, they trust my other friends whose asian more than their own daughter ¬.¬ and now, not only them who looks at me like a dirt but they made every1 look at me like that… I cnt even talk to these people who look up to me because I dont want them to get involve and if I do tell them why their parents suddenly stopped dem, it will make things worst, like they can say “im making them look bad to their own children” :(

any advice???