I don't know if you would refer to this as an Old Hollywood Blind Item or not. It was in the past, but is not that old school.
It all happened on a hit network television show. A huge network hit. It involved two actors who were probably B-/C+ list at the time. They met and fell in love on the show. They also died because of that love.
One was a younger actor who saw something in the older actor that he could not resist. At first, neither knew the other was gay because at that time, everything was a secret and almost everyone was still in the closet.
The two ran into each other at a watering hole though and the next thing you knew, the two were together almost everyday. The younger actor was already infected with HIV, but didn't know it at the time. The two started having a love affair and it was after they had started that the younger actor learned he had HIV. Shortly after, the older actor learned he too had contracted the HIV virus.
At one point in their relationship, the younger actor became very sick and kept getting sick and the two had to split because it was still important to their careers that they remain silent about their sexuality.
There was a lot of heartbreak, but they felt it was for the best to split. The younger actor died first, followed later by the older actor.
Younger actor: Timothy Patrick Murphy Older actor: Tom Fuccello TV show: "Dallas