I haven't been on the Board much this season, but after watching the Maui episode, I thought I would weigh in with my analysis.
Part of me says that she is indeed in love with Reid and the "firing" was scripted. Why and how is beyond me (I have stopped trying to understand TPTB's warped mind a long time ago) but if Ed went away and returned, we already have a precedent for this happening again. In this scenario, Reid returns to claim his girl in the final episode!
On the other hand, one could potentially believe that Ed is not a poor actor, but a dork who is genuinely in love with Jillian and that all of the supporting characters (Reid, Kip and Wes) are there to throw us off the true romance!
Then there is the (admittedly unlikely) scenario that Kip is the one, and that they are using all the drama to camouflage that true love story!?
Some pointers are pretty important though.
Jillian may be a very liberated lady but nobody wants to come across as an "easy lay" on national TV. The fact that we didn't see that there was anything with Kip on the overnight date and that we definitely did see that there was nothing with Ed says a lot. At the same time, there is no denying the naked bath Reid and Jillian took, which presumably lead to other activities!

. This would indicate Reid is the "chosen one"!
The fact that Jillian clearly says that she is most relaxed and natural with Reid also should count for something. This after all is the lady who proclaimed a lover has to be a good friend first!
So, which one is it? Using these and other historical pointers, I would still gamble on Reid, but ED (pun intended) may also be the one, especially with a puppetmaster like Fleiss. Kip will likely be the next bachelor and I can't see him being chosen here. My money would still be on Reid!