"It is officially out!" Louganis tweeted. "Yes, we are getting married! Love my life and love Johnny Chaillot."
After being swamped with well wishes after the posting, Louganis sent the followup tweet: "OMGosh! Thank you all SO much! Love my life and love my Johnny!"
Louganis did not say when or where he and Chaillot planned to tie the knot.
Notable deaths of 2014 [PHOTOS]