As I learned when I pined for a heterosexual friend, no amount of wishing this or that were so is ever going to make things magically fall into place for me. I had a harsh realization that my interest in him was becoming obsessive and unhealthy, all over something that could not ever truly work.

The suspension of disbelief you'd need to not only overcome your orientation, but to act as if nothing unusual is going on! Unfortunately, this person, and probably many others like her, have disorders such as BPD which make for all sorts of magical thinking scenarios.