"Every moment since then I've been falling more and more in love with you.
There have been plenty of times where I've tried to fight it, and I don't want to fight it anymore because I do love you. So much about me being here has to do with the past.
"We know we have a long way to go," Viall told host Chris Harrison.
Many younger guys are driven to women who are 10 years older than they are or more, as these women are often more confident and more sexually driven and passionate than the younger women.
Grimaldi beat out runner-up Raven Gates, and Viall struggled with delivering the break-up blow to his second-place finalist, having been in her shoes two times prior.
"I thought a lot about our time together, our journey," he explained to Gates when she arrived, first out of the limo.
That higher sex drive translates, among other things, into being more direct with men.
The more mature women may be interested in dating a younger guy out of sheer curiosity of what it feels like dating someone younger, and also because usually younger guys are more “agile,” active, energetic.