It is easiest to get on the NTR or hard cuckold paths, difficult to impossible on romance and happy sharing/swinging. I could gain it on a romance and ahappy sharing run with a clear "WTF" decision, taking it out of the path in a way, but it is possible if you can close your eyes to that.I missed this traits too , do you know how to have that
One way to get the "Hybristophilia" trait, you need Jamal being antagonistic during the advertisment photo shot at the Club. But during your confrontation you also need to hold back enough so you can still stay and go into the new VIP area with them. Play out that part (including the VIP area portion) and during it Mei gains the trait.
As said above, this functions with a romance (with serious rival) and happy sharing/swingin run too, but storywise would be hardly
logical that Jamal is nice before and antagonistic once, then nice again. But if you want this trait for one of the nice paths, it is one option.
By the way, 3Diddly announced a new game feature in a coming update, early in the game you can choose one trait for Mei without having to play the part where it is gained. It is done so players can experiment more and finetune events better.