Moana. It never fails on this show that the one the Bachelor get along best with is the one he doesn't pick. They go for the one that is the most intriguing or sensuous of the two. But it never lasts, because they should have picked the one they got along with.
This is a fantasy show. Given the fact that the Bachelor is given two women to pick from, & given the time frame of the show, when one woman is more intriguing, mysterious, or emotionally, a tougher nut to crack, he's going to go for her. In some ways, he's still pursuing her, trying to figure her out, & that intrigue makes her more appealing, in comparison to the "best friend" girl.
But in real life, if he was just dating one woman at a time, he'd STAY with the one he is most comfortable with & not look for the "intriguing" one. Or he'd leave the intriguing one once he's figure out she's not right for him - which is what's been happening.