Tori spelling might be dodging the cheating rumors about husband Dean McDermott because a divorce would cost her; the couple might not have a prenuptial agreement.

According to RadarOnline, the former "90210" actress and her husband married in 2006 without signing any prenup paperwork. And it wasn't McDermott who didn't want to sign one, it was Spelling.

"Dean offered to sign one, but Tori refused," a source told the gossip site. "She truly believed Dean was her soul mate and there was zero need for a prenup."

"With the recent allegations that Dean cheated on Tori, she's now kicking herself for not securing the prenup with Dean," the insider added. "She doesn't plan on divorcing Dean, but feels that a prenup might could have prevented him from cheating on her."

McDermott allegedly had an affair with a 28-year-old Canadian woman while her was on a trip to Toronto, but the couple has not confirmed the rumors.

However, Hollywood Life reports Spelling is also fears a nasty custody battle would ensue if there were a divorce. The couple has four children together: Liam, 6, Stella, 5, Hattie, 2, and Finn,1.

"Tori is terrified of a divorce. She still wants to believe that Dean didn't cheat on her but it's becoming impossible for her to live in denial anymore - but that doesn't mean she'll leave him," an insider told Hollywood Life.

"She's so angry and hurt," the source added. "She can't stand to look at him but she's terrified of a divorce. The idea of a custody battle literally makes her sick to her stomach, and she's terrified of being single. Dean is her prince charming, or he was. Her world is shattered right now, it's so sad."

What do you think of the cheating allegations against McDermott? Do you think Spelling will divorce her husband? Let us know in the comments section below.