Paulina had that with Jake, too, once Jake fell in love with her. Once he did, he never slept with another woman, even the year that they were broken up during which she was banging Ian. The writers did set up an affair between Joe and Josie, by the way, but it got scuttled before things went too far and the show went a different direction, IIRC because Tim Gibbs had exited and they recast Gary, but I don't remember too well now.
Ryan's death spun off strong story, but I think it also really ultimately hurt the show in lasting ways. It ended not just one supercouple in Ryan/Vicky, but another in Paulina/Jake in order to make Jake available for Vicky (and then quickly bogged them down in the awful triangle with Bobby/Shane, or Shabobby as some of us called him). And while I was into Jake/Vicky, the pairing did have problems because of Jake's history with Marley, and it meant Paulina went with Joe and that pairing was the ruination of her character. She lost all her spark and spirit and complexity, and became so incredibly boring after that, save for the storyline when she was hooked on pills and hit Vicky's kid on Vicky and Jake's first attempt at a wedding day. Paulina used to be one of the lead females, paired with a top male lead, and she became a supporting character paired with a supporting male lead in a boring relationship. I felt so bad for Judi Evans.
So in summation, Ryan's death ultimately destroyed two supercouples and caused the demotion of one of the best actresses/characters on the show, and in return we got a likable but problematic supercouple that didn't compare to either of the two destroyed ones and largely ate the show. Again, I did enjoy Jake/Vicky, but it wasn't worth it. Just like I liked Cass/Lila, but knocking out the tentpole couple of Cass/Frankie did permanent damage.