The Umbrella Academy star was married to the dancer and choreographer for three years.
"As my thoughts and heart transition to embrace this new you, please know one thing isn’t changing ― I love you."
"From the bottom of my heart, thank you. Your love and support has been the greatest gift."
"Elliot’s existence is a gift in and of itself. Shine on sweet E. Love you so much," Emma Portner wrote.
"I want to share with you that I am trans, my pronouns are he/they and my name is Elliot," the actor wrote on Twitter.