It is possible to end up with both, I say end up with, cause the path itself is atrocious dogwater bad.
The throuple path is basically, a solo Jaye path, that disregards anything Mallory, her feelings, story and everything till the very end. You don't even profess your feelings to Mal, you tell her, its just to help her, then basically break up for the last 3 chapters, then magically everything worked out, like a fairy tale when Jaye suddenly out of nowhere will just accept Mal now.
Really great story writing