On another note the arrival of a child with special needs may well see Prince Charles either divorce to worldwide condemnation or stop his wayward eye's and get closer to his young bride. So it is a make or break for the couple. My money would be on it making a long term relationship more likely out of the pressures and joint love/defence of William.
I am no fan of Prince Charles but he truly does love his children and I am sure he loved Dianne but fell out of love for some reason, possibly the bulimea etc.
OK. This is an area where I do have some knowledge. While I am not in a position to give examples or details, I am in a position to give my overall impressions, based on working as CPE for Charles for a time during the period (mid 1980s, and I'd rather not be more specific than that).
Charles' wayward eye? That had me spluttering into my cornflakes.
Charles has had precisely one love of his life. Camilla. Before marriage to Diana, he had a few dalliances, but from the moment he married Diana he was technically faithful to her until the divorce. One can argue - quite convincingly - that being self-evidently in love with another woman and only marrying Diana because of the pressure of the Firm and being convinced it was his "Duty" to do so counts as infidelity in all but name, but that's a separate discussion. He was technically and physically faithful while the marriage was in place.
Diana, by contrast, and to put it mildly, wasn't. By the mid-1980s, she'd had affairs with literally dozens of other men. Amongst the CPE, her codename was "Fireplace", and those responsible for her protection were given strict briefing instructions: "Don't." Whether her seeking such affairs was a good thing, a bad thing, or just a thing is beyond the scope of this discussion. However, the term "wayward eye" most definitely belongs to Diana and not to Charles.
As for the concept that Diana would be brought closer to the family through William having special needs - it is to laugh. Diana was interested in precisely one person in this world, and that was herself. The idea of her doing the hard graft involved with a child with special needs is - quite simply, mind-boggling. She barely bothered with the children as it was, preferring to leave the details to the staff. To Diana, William and Harry were no more and no less than photo opportunities. Put a camera within eyeshot, and she gave the relevant photogenic pictures. And, as soon as the pictures were taken, passed the child to the nearest staff and complained. God, that woman complained.
The whole marriage was doomed from the moment it started; Charles never loved Diana, but had been bullied into doing his duty (Camilla was unacceptable at the time. The Queen Mother hated Camilla, and practically forced the Diana fiasco. Likewise, Diana never loved Charles. She loved the concept of being the fairy tale princess, and expected that - as she was Princess of Wales - the world should worship the ground she walked upon.
Charles never fell out of love with Diana. He was never in love with her in the first place, and the bulimia and Diana's multiple infidelities and her brutal treatment of staff that annoyed her and her brainlessness and her... Sorry. I get carried away by thoughts of that woman. Suffice it to say that, to adapt a quote said about Henry VIII: "If all the pictures of narcissism were lost to the world, they could be recreated from Diana."