Linda Thompson is opening up about her former husband Bruce Jenner, now known as Caitlyn Jenner.
Thompson and Jenner were married from 1981 to 1986 and share two sons, Brandon and Brody Jenner.
Jenner, who was then known as Bruce, revealed to Thompson in 1985 that he felt as though he were really a woman.
"Thirty years ago, few of us were educated about the world of gender dysphoria," the songwriter wrote.
"So my reaction was utter confusion, even desperation. My whole world began to crumble."Thompson and Jenner saw a therapist, but the Olympic champion remained interested in gender reassignment therapy.
Thompson first saw Jenner dressed as Caitlyn shortly before their marriage ended.
Thompson said Jenner, who publicly came out as transgender in April, "seems so much happier and freer" today.
She said she "completely accept[s], respect[s] and support[s]" her ex-spouse's transition, but admitted she also "sometimes miss[es] Bruce."
"I sometimes find it surreal to look into her perfectly made-up, beautiful brown eyes, while remembering the masculine, gorgeous man who fathered my sons," the songwriter confessed.
Jenner admitted in an interview last week that she considered suicide during a difficult time in her transition.
Her eldest daughter with Kris Jenner, Kendall Jenner, said in the September issue of Vogue that she's come to embrace her dad's change.
