According to her new autobiography, "sTORI Telling," the actors slept together soon after they met, even though they were each married to other people at the time.
"When I met Dean, it wasn't a question--I had to follow my heart. I had never believed in love at first sight, but when I saw Dean, I knew it did exist," Spelling says in an interview in the upcoming issue of Redbook. "Ultimately, you have to realize that happiness is out there and not settle for anything else."
Spelling is currently pregnant with the couple's second child.
The affair and subsequent quickie marriage was ideal tabloid fodder, but Spelling says she's been dealing with gossip since she was 16 and a star on "Beverly Hills, 90210."
Spelling talks about her life, marriage, and her new book in the April issue of Redbook, on newsstands now.