(And, yes, I am lifestyle insensitive.)
Let me see if I’ve got this straight. Chaz Bono was born Chastity Bono, to Sonny and Cher. She (Chastity) at age 13 decided she was lesbian. In 1998, she (Chastity) wrote that coming out "catapulted me into a political role that has transformed my life, providing me with affirmation as a lesbian, as a woman, and as an individual.” (Family Outing, Little-Brown, 1998). In 2008, she (Chastity) began “gender transformation,” that is, changing from what she was (see the above “affirmation as a lesbian, as a woman …”) to a man.
Now we get to Jennifer Elia, who “began seeing Chaz before his gender reassignment process began, when he was still Chastity Bono, in 1999.” http://www.zimbio.com/Jennifer+Elia
She (Jennifer) began dating her (Chastity) because both preferred women rather than men as sexual partners. But then she (Chastity) decided to become Chaz. Six months ago, she (Jennifer) said she preferred her/him (Chastity/Chaz) as a man. “Jennifer, who says she is a bisexual woman, said that their intimate relationship as a now 'straight couple', has improved 'for the good.'"
But now they have broken up, boo-hoo.
So. A girl decides she prefers other girls as sexual partners. She enters into a relationship with another woman who likes women. A time later, though, the first she decides to become a he, and the second she prefers “him” with new parts.
Welcome to the New World.