in the last few days, I've seen several posts about some lesbians' negative attitudes toward #bisexual women. so I'll re-up this essay – "Penises, Privilege, and Feminist & #LGBTQ+ Purity Politics" – which gets to the root of this antagonism (no paywall): https://juliaserano.medium.com/penises-privilege-and-feminist-lgbtq-purity-politics-bafd1f25fe3e