Credit: Jon Kopaloff/FilmMagic; Lawrence Lucier/FilmMagic

Steve Stifler is finally settling down!

At the L.A. premiere of American Reunion Monday, Seann William Scott confirmed that he is indeed planning to marry former Victoria's Secret Model Lindsay Frimodt.

"I don't how I got a girl like my fiancee," Scott, 35, told E! News. "She hadn’t seen American Pie. Thank god. Otherwise, I probably wouldn't be engaged."

A source tells Us Weekly that Scott and Frimodt "were talking about getting married as early as October, but it didn't happen then."

Prior to his relationship with Frimodt, Scott was linked to actresses Jaime King, 32, and January Jones, 34.

American Reunion -- also starring Jason Biggs, Tara Reid, Alyson Hannigan, Chris Klein and Eddie Kaye Thomas -- is in theaters April 6. Prior to reprising his role as crude party boy Steve Stifler, Scott "completed a successful treatment program" at an undisclosed rehab facility in March 2011.