Well, it’s official: Garrett Yrigoyen and Becca Kufrin are now engaged. Yes, the 29-year-old medical sales rep was the guy who ultimately won Kufrin’s heart on this season of The Bachelorette, but their courtship’s been plagued with controversy. Shortly after The Bachelorette premiered in May, an alumnus of the franchise, Ashley Spivey, posted several screen…