There's a ring in Clemson superstar Trevor Lawrence's future even if the season is canceled ... 'cause the QB proposed to his longtime GF -- and she said YES!!!
Lawrence -- a Heisman hopeful in 2020 -- has been dating Marissa Mowry since early 2016 ... and decided to pop the question at Memorial Stadium in Clemson on Friday.
Pictures capturing the moment show a fully suited Lawrence get on one knee in the middle of the field and present the ring to a shocked Mowry.
"FOREVER," the 2018 national champ said on Instagram.