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John Stamos's relationship with former girlfriend Teri Copley was on thin ice in the 1980s, but he realized things were officially over after he allegedly caught her in bed with another man — a very popular actor.
Teri, however, denies that account (more on that later…)
In his new memoir, "If You Would Have Told Me" — which hit bookshelves on Oct. 24 — the "Full House" star recalls being in "overwhelming" agony over what he saw. At one point, he even thought about having a physical altercation with the other man, though he ultimately thought better of it after seeing his "ripped abs," John told People magazine while promoting his book.
Keep clicking to find out who this mystery man is…
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The man John Stamos found in bed with girlfriend Teri Copley was none other than "Who's the Boss?" star Tony Danza, John claims.
"Seeing him, realizing it was him and stuff, it was hard. I mean, it was awful," John told People magazine.
"At first I was like, 'I'm going to kick his…' I didn't know it was [Tony] yet. I see his abs. I'm like, 'Maybe not. F*** it.' And I ran," he said. "But I remember running down the driveway with tears streaming down my face and I didn't want anyone to see me."
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When John Stamos saw Teri Copley in bed with another man, he didn't recognize him at first — but he soon realized who it was thanks to a quick glance in an unfamiliar car parked outside — and Elton John.
In his book, John explains that he looked into an unfamiliar car parked outside Teri Copley's home as he left and saw a poster of the model-actress — which she'd signed "My Dear Tony" — on the front seat, People magazine reported.
"I jump in … start the car, and Elton John is still singing, and that's when it hits me," John writes. "I mouth the words to his most famous lyrics and realize the name of my rival: 'Hold me closer, Tony Danza.'" (The frequently misunderstood lyrics is actually "Hold me closer, tiny dancer.")
He added, "It took me a long time to get over that."
Tony is pictured here with Teri in 1986.
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John Stamos was "breathless" after the alleged cheating incident.
"I can't explain it, but I would've rather been punched in the nose again or something because the pain is so overwhelming," he told People magazine while promoting his memoir, adding that it was "physically painful" and "worse than anything."
Ultimately, he realized Teri Copley "wasn't the right girl" for him.
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Teri Copley is fighting back on John Stamos's claim, insisting the two weren't together when she and Tony Danza were intimate.
"I wondered, 'What was John doing there?' because we had broken up," she told People magazine. "He just looked at me and shook his head and walked away."
After all these years, John feels that Teri is a "nice person."
"I mean, it wasn't right to cheat on me, but I was too immature; I wasn't a man," he told the magazine. "I didn't become a man for a long time and I think she was… I don't know. I was broken."
John and Teri are seen here in 1985.
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In a lengthy YouTube video, Teri Copley further argued against John Stamos's account of the evening in question. Teri claimed the "Full House" actor didn't catch her in bed with Tony Danza: She was "fully dressed" and opened the door when he arrived, she said, adding that Tony's car was in full view in the driveway.
"[John] just shook his head and looked at me like, 'How could you?'" she claimed. "Well, I looked at him and didn't say anything either. I just looked at him like, 'What do you care?'"
"He certainly didn't come in my house and find me in bed naked with a sheet over," she continued. "I mean, none of that happened."
Teri noted that she and John broke up after she got a phone call from the actor's mother.
"She called and she said, 'Teri, I know that you love John, but don't plan on marrying him because he has no intention of marrying you,'" she recalled. "I remember like it was yesterday."
Teri — who admitted she was very "young" at the time — dumped John after that call. A few days later, she reconciled with Tony, whom she'd previously dated.