It's been a long time since I played the premades, LOL!
Anyways, each time I played them I turned the tables on Don. I always had Cass turn into a strong independent woman, have Don fall head over heels in love with her (while using cheats to decrease her relationship scores with him) and have her dump him and break his heart. The last time I did (back in 2012) he fell into Aspiration failure and I don't think he quite recovered from it.
As for Darren - I paired him up with the single ladies/widows. In different variations I paired him up with Brandi, Nina, Kalynyn, Bella (at some point), Sandy Bruty, etc. He even married Mary-Sue at some point. These were at different times, of course! I never went through the trouble of resurrecting Darleen since they didn't have enough money.
