Tiffani Thiessen ‘hurt’ by ‘falling out’ with ‘90210’ co-star Jennie Garth

Former “90210” stars Tiffani Thiessen and Jennie Garth may have graduated from high school, but they still are acting like immature teenagers. In an interview on Howard Stern’s Sirius XM show, the brunette opened up about the years-long feud she has had with Garth, despite the fact they were once so close that Thiessen served as a bridesmaid in her wedding to Peter Facinelli and was even in the hospital room when she gave birth to the couple’s first child. "We had a falling out and we grew apart," she explained, although she wouldn’t say what specifically went wrong. "I was the one who was hurt, let's just say that. I was the one who was hurt." Thiessen’s side sounds slightly weird considering an encounter the two women had in 2009 when she reportedly said “hello” to Garth at a party, to which she replied, “'OK? You got me!” before storming off, according to an eyewitness.

The “White Collar” actress, 38, also revealed that she and Garth, 40, – as well as Tori Spelling and Shannen Doherty – started off as enemies on the “90210” set when she joined the show in 1994. “The girls were not very nice to me," she told Stern on Monday. Garth "actually apologized" later and then "Jennie and I became very good friends … It's funny, our relationship started really rough and ended the way it started. It's water under the bridge … I've moved on. I wish her well."

Garth isn’t the only former “90210” cast member with whom Thiessen no longer speaks. Although she was friendly with Spelling after the show ended in 2000, once Spelling left her first husband Charlie Shanian in 2006 for her now-husband Dean McDermott, Thiessen was forced to pick a side. “It was a hard situation for everybody," she said, adding that her daughter coincidentally goes to the same school as Spelling’s kids. "We were close with Charlie ... my best friend was Charlie's roommate … It was really trying to take care of the person who I thought was, probably, done wrong.”

Another former co-star who probably shouldn’t expect a phone call from Thiessen anytime soon: Dustin Diamond, who played Screech on “Saved by the Bell” with her for four seasons. In 2009, Diamond wrote a scathing tell-all about his time on the show and revealed that Thiessen, who played bombshell cheerleader Kelly Kapowski, had slept with many of the men on set, including Mario Lopez. Noting that she had never even read the memoir (“Most of it is untrue, from what I can tell”), she added that she’d probably never even get the chance to confront Diamond about it. “He lives in Wyoming or something,” she joked. “When am I going to run into him?”

More Celebrity Features on Yahoo!:

Follow omg! on Twitter