If a butch Les had a change, would her Les partner stay with the new him?

I'm trying to understand, and please only serious answers. If the gay community wants the straight community to be more excepting, we need to know these things. So back to my question. I have read on YA many answers from Butch s that they feel as though they where born in the wrong body. If they are in a romantic relationship with another woman, and decided to have a change, I would ume they would still prefer to be with a woman. Would their partner stay after the change? Would that then make the formerly partner straight?