"The two have been dating for a few months," a source confirms to ET.
The former Miss Universe took to her Instagram page on Sunday to share a sweet video of Amendola dipping her while the pair stared sweetly into each other's eyes. Culpo captioned the clip, "VEGAS BABY."
In April, Culpo and the 30-year-old wide receiver were spotted holding hands while partying at the Coachella Music Festival in Indio, California.
Last Monday, Culpo and Amendola hung out together in Massachusetts where she snapped a pic with her beau in their car, and took him out for brunch at "the fam restaurant," Lulu's Allston, which is owned by her cousin Joshua.