Oh, I don't know, didn't Andi walk away from Juan Pablo? But in saying that, I don't think there's any chance Nick would be the next Bachelor. He's just too creepy.
This article from Bruce's hometown says he was such a good motivator the show has asked him to return next season as a coach. http://www.heraldextra.com/entertainment/television/local-resident-undergoes-transformation-on-extreme-weight-loss/article_df69d974-6626-59fe-a123-97dfb5ed3d0e.html
I was half expecting to see Monk at the end in the SF crime scene. Especially when Chief Vick said he was in the kitchen alphabetizing something. All in all, though, a very enjoyable ending to a fun show.