Aaron Spelling Productions/Everett Collection
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Brenda, Dylan and Kelly, Beverly Hills, 90210
Paris is the city of love — and also heartache in Brenda's case. During her summer overseas, beau Dylan and BFF Kelly hooked up and kept their tryst secret until after Brenda dumped him later. Unfortunately, this triangle met a premature end when Shannen Doherty left the series, but that only paved the way to another longstanding 9-0 triangle: Dylan, Kelly and Brandon.