GBF to more?

So, this is going to be a VERY specific request and I’m not sure anyone has done it, but… there was a talkshow well over a decade ago (maybe even two) where a lesbian came on to admit to her male best friend, whom she grew up with, that she had somehow managed to fall in love with him. She asked him out and they shared a passionate kiss on screen and it was very sweet. Does anyone know of any book where the gay best friend goes… not straight, but for HER? He’s not into girls. He’s into her. That’s it.

I’m reading the Wicked Brotherhood series and Heath has stolen my heart, but it’s a moot point since she was only pretending to be a boy. Bonus points if anyone knows the show/episode I’m talking about since I cannot remember for the life of me!