Replying to above posts about how the show is put together, story boards and the like. The best place to start is the end: the credits rolling at the end of the show. These jobs each carry duties/descriptions that are fairly standard now for "unscripted" TV, but the key people in terms of storytelling are producers and editors.
The producers cast and plan the show and then manage their planned story line during the shoot. Later -- using detailed logs and notes -- they direct the editors toward potentially interesting material and give their general organization/approval. For an hour- or two-hour long program, various producers screen up to 200 hours of footage ... maybe before the editors see a minute of footage.
The editors are the ones who literally create the content we obsess and over-analyze. The editors are the ones who cut and present the scenes to make them "romantic" or goofy, tense, sad.
During filming, junior staffers are charged with virtually transcribing/logging everything that happens on all the hundreds (and hundreds) of hours of footage that are shot from as many as 10 cameras (simultaneously at major shoots like Meet and Greet night), so that all along the way, story and character themes are discussed and teased out of the Set-up's / Situations producers have created (let's make Twilley into a stalker, and David into a Man Code freak; let's set Molly up to be resented by the other girls by having her spend the night in the tent with Jason, let's wake Bettina up in the middle of the night to ooh and ahh over someone else's date).
Show editors can choose among the multiple available story arcs generated from the Set Up's / Situations that have been filmed. Moments that might help illustrate a STORY or a CHARACTER trait are marked (electronically, in the log) all along the way. Story editors (titles can vary) watch hours and hours of footage and suggest Stories for airing. The editors might follow those ideas, or come up with something else.
Like any reality show, the producers/editors of The Bachelor would prefer unscripted drama/conflict/romance -- it makes better TV (I am in the minority but from day one I have 100% contended that Ed removed himself from filming, and then they capitalized on it. I also believe that they capitalized on Jason sincere realization that he and Melissa had no future, and he wanted Molly instead.).
But they have many backup plans, and manipulate people and events so much all along the way, before and after filming, that the assumption has to be that nothing you see reflects "what happened" to the real people, except in flashes of authenticity. Is Jake "perfect"? Was Wes merely promoting his career? Is Reid "quirky"? None of us could remotely comment on that from the 1% of their interactions that were presented on the show.
The storytelling for Jake and his gals is going to be atrocious. They have taken this show to the Dark Side.