Bachelor in Paradise teased a dramatic twist for its finale that would shake up all the remaining couples, but the twist was actually a lack thereof and led to the demise of Sarah Herron and Robert Graham.

Harrison's first test was for the couples to determine whether they could see themselves pursuing an actual committed relationship outside of the show. Each couple was forced to examine their dynamic and themselves, and if they didn't see a future together, they were told to leave paradise immediately.

"I was extremely skeptical, as there just seemed to be something off with them," Harrison wrote in his Entertainment Weekly blog of Herron and Graham surviving their first test.

However, the couple ran into trouble during their second test, which was to simply enjoy an overnight fantasy-suite date with no cameras around. Herron returned to Bachelor in Paradise's beach villa pretty upset the next day.

"This is something that seems simple and fun, but as you saw with Robert and Sarah, it proved to be their undoing. All three couples returned home from their overnight dates happy. Two couples were a lot happier if you know what I mean, and I think you do because everybody was very detailed and happy to share their experiences," Harrison explained.

"The more Sarah looked around the room and listened to everybody, she quickly realized her relationship and experience didn't quite measure up. Now I think some might say she shouldn't have compared and just gone with her gut, but you should know her gut was already telling her something wasn't right."

Added the host, "I also think many will say it was about the sex or lack thereof, but that isn't the case at all. It's about chemistry and more importantly intimacy on any level and that has nothing to do with sex."

Harrison apparently believes Herron had every right to be turned off by Graham's behavior in the bedroom.

"When a woman comes out to spend an intimate evening with a man, and he is trying to go to sleep and does so with his jeans on, that's not a good sign. There are major issues there. Again, please don't get me wrong, I have no problem with Robert not wanting to be intimate, but obviously Sarah and Robert were on different pages here. Honestly they weren't even in the same library," Harrison wrote.

"For Robert to not communicate what he was feeling and to just go to sleep and leave her hanging emotionally is a huge red flag, and on that flag there are bold words that say RUN!"

Harrison found something very "startling" about the conversation in which Herron confronted Graham the day after their less-than-steamy overnight date.

"He truly felt it was a great night and everything couldn't have gone better. How could they feel so different about the same experience? I also found it odd when Robert would say he was feeling an emotion, but I couldn't see it. It was hard to tell if he was truly feeling those emotions he was talking about," Harrison said.

"I know later Sarah was second guessing her decision to break it off with Robert, but I hope now that she's watched the show back she'll realize she made the right decision."

Bachelor in Paradise concluded with Michelle Money and Cody Sattler becoming boyfriend/girlfriend as well as Lacy Faddoul and Marcus Grodd getting engaged. The show has officially been renewed for a second season on ABC.