NFL superstar Christian McCaffrey and Olivia Culpo are officially at war -- don't worry, their relationship is doing just fine -- but they're now competing against each other for the best abs on the planet!!!
The Carolina Panthers RB and former Miss Universe hit the waters for a romantic meal on Monday ... eating up all the Chick-fil-A sandwiches they could fit in their shredded bodies.
OC posted a snap from the getaway on Instagram ... with the couple sharing a kiss in between bites.
"You had me at fried chicken sandwich," Culpo posted.