Forcing someone into "therapy" should always be recognized as wrong. It needs to be a choice, especially with something as intimate as sex.
I have four female friends who went through phases in their sexual orientation.
Two of them had girlfriends they were sexually active with, before deciding for various reasons it wasn't right for them. They've been exclusive with guys ever since.
One of them continues to say she is bisexual, though she's only had straight sexual experiences, is happily married, and says she never seriously thinks about sex outside her marriage. She also enjoys writing about and roleplaying people that are mentally disturbed so.. some people read into that. She's a great gal though! A creative & loyal soul.
The last of the four is the most disturbed. She was raped in her sorority, then dated one of the girls that participated in it.. now mostly makes references about them at odd times then refuses to talk about it. You never hear about girl-girl rape, but it happens. Anyway, for the last several years she's exclusively dated guys, but I've watched her dance with one of her gay friends so sexually that it made the friend uncomfortable so.. yeah.
I wonder if greater acceptance of gay people will fix all the mental confusion that seems to surround it so often, or if it'll just make it worse because as a kid you will be told you can be anything you want to be.. including a furry, a vamp, a werewolf, pansexual, omnisexual (Philip of Macedon)...
There are some things to be said for having stable cultural expectations one can live up to or rebel against, rather then the shifting mire we have in so much of the world now.