The Wham singer was found dead on Christmas Day by Fadi, but the tweets from his account claim “the only thing George wanted is to die”.
It is not known whether Fadi’s Twitter account was hacked, but the posts and account have since been deleted.
“The only thing George wanted is to DIE. He tried numbers of times to kill himself many times and finally he managed.
“We loved each other very much and we were together almost 24 hours a day..”
Fadi had previously tweeted: “It’s a xmas I will never forget finding your partner dead peacefully in bed first thing in the morning.. I will never stop missing you xx.”
It comes as the post-mortem examination into the death of the 53-year-old singer proved “inconclusive”, with further tests to be carried out, police said.
Found dead at his home in Goring-on-Thames, Oxfordshire, on Christmas Day, Michael’s publicist said his family and friends had been “touched beyond words” by the “incredible outpouring of love” from fans, adding there were no suspicious circumstances around his death.
Thames Valley Police said: “The cause of death is inconclusive and further tests will now be carried out. The results of these tests are unlikely to be known for several weeks.
“Thames Valley Police will prepare a file for the Oxfordshire Coroner. Mr Michael’s death is still being treated as unexplained but not suspicious.”