The two guys were apparently born just one day apart from each other.
"Two of my favorite guys had big bdays! Benjamin turned 30 yesterday and has been my greatest surprise and blessing," Jessica wrote of her boyfriend, who went public with their romance about one month ago.
"Baby Philip turns 21 today and has been my best friend and little brother since forever. My heart is just overflowing, what a weekend."
Since announcing their relationship in February, the couple hasn't been shy about expressing their feelings for each other on Instagram.
At the time, Jessica gushed on social media about how Ben "has one of the biggest hearts and kindest spirits." And Ben has said Jessica is an "incredible" person with a pure soul.
Ben first revealed he's in a new relationship in January on his The Ben and Ashley I. Almost Famous Podcast featuring Ashley Iaconetti, but he chose not to identify Jessica as the woman in his life right away.
Several weeks later, the Season 20 The Bachelor star introduced Jessica, a 23-year-old Nashville resident and recent University of Mississippi graduate who reportedly sells LED lighting for a living, to the world, when the cute couple also went Instagram official.