While I did see more passion between Arie and Emily than Jef and Emily during the first half of this season, I did notice and even mentioned it on here that the passion seemed to be cooling at least from Emily's part during the last part of the season.
There's more to deep love than sexual tension. Deep love lasts even during the humdrum days.
I loved and still love Arie. I would love to see him as the next bachelor instead of boring Roberto. The thing is I believe he really did fall for Emily and am not sure how quickly he could handle being the lead. Though I am glad to hear he's been seen with someone.