According to the article on the site http://www.lesbilicious.co.uk/music/why-do-lesbians-hate-bisexuals/
two-thirds of the lesbian subculture admitted having (at leat periodically) had attraction towards men during an anonymous study by Lisa Diamond.
It's a very interesting article, it's really worth reading.
I support the fight against biphobia and against biphobic behaviour in the lesbian subculture like the "golden star".
I hope reading through this article may encourage some bi girls, especially with stronger lesbian tendencies, who go through the same struggle as I right now.