Look, these are the facts.
Terri collapsed Feb 1990. The malpractice suit (not sure when it began) was settled on appeal in Nov 92. Michael got 600k for loss of consortium and Terri got 1.4 million for future medical care and rehabilitation.
(Throughout the malpractice suit, during which he swore undying love and commitment to care for her the rest of his life and expressing his heartfelt desire to take her home if only he had the money with which to do so, he was having a long-term affair - almost a year at that point - with another woman and planning to move in with her.)
Only 3 months later, in Feb of 93, Michael stopped all therapy and placed a DNR on Terri's chart. The dispute with her parents began. 6 months later he denied her treatment for a potentially life-threatening infection. He did this again in Sep 95. During this time Michael denied Terri's parents access to any information about her condition. They got a court order in response.
At some point he began to see his current fiance, Jodi Centzone. They formally announced their engagement in July 97, shortly after Michael first sought permission to remove Terri's feeding tube.
In June 98, a guardian ad litem was appointed by the court to review Terri's case. He recommended against the removal of the tube, and as a result, Greer filed bias charges - against the guardian ad litem that he himself appointed - and removed him from the case.
At some point in 97-98, Michael retained the services of one George Felos, known euthanasia attorney and Suncoast Hospice Board Member. Shortly after that, he suddenly remembered that it was Terri's wish to die.
(And subsequently spent over half a million dollars on legal costs to that end, with the blessing of Judge Greer, who ruled to allow Michael to spend the medical fund money on lawyers fees.)
In Apr 2000, Terri was moved to the Suncoast Hospice, the same hospice for which Felos served on the board (no conflict of interest there of course), despite the fact that she was not terminally ill. Felos soon resigned from his board member position after public exposure.
So, bottom line - Michael began to try to kill Terri 3 years after her collapse and 3 MONTHS after her settlement award. He first petitioned the court for feeding tube removal 7 years after her collapse, and "remembered her wishes" 8 years after her collapse, following his legal retainer of a well-known euthanasia advocate.
The dispute with Terri's parents began in February, 1993 over money, specifically the $300,000 loss of consortium award that was given to Michael. The Schindlers and Michael have not spoken directly to each other since then.