"Tiffani and I were dating before she started doing the show," he said of Tiffani Thiessen, who joined 90210 in season five.
As for why Thiessen isn't a part of BH90210-- the reunion series that recently premiered on Fox -- Green explained that it was simply because "the reboot was the original cast and she wasn't in the original cast."
"That was sort of our idea going back, it was the original group of people that were there at the start," Green said.
"He'll be honored in a very respectful way," he said. "But to everybody that's ever met him or knew him, he was an amazing person and he was a blessing for people to have in their lives. And I feel so blessed I got to do what I did with him. That I had the experience that I did."