Many people are aware of Alicorn's post on polyhacking. There are a few things which have been written on bihacking, though I haven't seen bihacking discussed within the rationalist community as widely as polyhacking has been. Bihacking is the process of actively trying to become bisexual.
First, there are a couple sources which suggest that people can have "epiphanies", after which they become bisexual, or perhaps just recognize their latent bisexuality. This may be due to the fact that they are able to tell themselves different stories about their feelings towards others after having an epiphany. Here are two relevant links:
Secondly, some people have had mild successes with working towards bisexuality by slowly starting to explore new experiences:
I fear a time will come when people who don't want to try polyhacking bihacking will be labeled as homophobic. And that will just further dilute the term.
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