Which path did you take with Lexi? There are multiple outcomes based on several decisions you make along the way. Some better than others. There is indeed a solo Lexi path that works with Erynn as a very close friend. Any cheating can ruin both the stories, unless you go down some of the secret paths.I can't stand Eryn. I was ready to be happy with Lexi only to have her tell me to fuck off. Got yanked to Nikki then yanked away only to have her show up at the door.
The Niki path really only falls apart at one spot, and she tries to chase MC down about it on the way back to the airport (aeroport?). But when MC gets angry he doesn't listen to anyone or anything while upset, except for the thoughts in his head that can be all over the place, and overreacts.