I take back what I wrote earlier about the lack of a throuple ending with Christine and Jessica. Following the WT mod allowed me to see the ending with Christine staying with the MC, while we cheat on her with Jessica on the side for at least a couple of months while Chris works on her career. Not one to normally be ok with blatant cheating, but with Jessica it's kinda complicated. Jess is still lonely and heartsick over Chris, and even the MC to a lesser extent but unable to move on. Thankfully she's ok with hooking up on the side so she gets all the sex she's craving, but loves Chris too much to ruin her relationship with the MC, so she keeps it quiet until the solution to their problems suddenly appears!
In a weird twist of fate, since Chris still had feelings for Jess and enjoyed their earlier 3some so much she wanted to ask for a repeat of that night, but was too shy/embarrassed to bring it up. Good thing she must have talked about it to Jess at some point offscreen who suggested to the MC to bring Chris along to their next tryst for some good 3some fun.
As I interpreted that successful outcome, Jess became a regular part of their sexy time going forward and an unofficial part of their relationship as she never moved on and dated anyone else. Good thing Chris came to terms with sharing the MC, and figured it was better to share him with the only other person she's in love with than some other woman.
Happy ending achieved... especially the pregnancy part. The only outcome I would have liked to see as a 'what if?' is what would have happened if after Monica's secret crush and the truth behind her jealousy over the MC's affair with her married friend (instead of hooking up with her) would have been allowed to play out after they got back from the cabin and presumably had sex. I know it's insane throwing in a last minute L.I., but it would have been a nice, brief epilogue either juggling Monica, Jess and Chris, or leaving Chris and Jess to be together while the MC pursued a relationship with Monica.