Time heals all wounds, right?? Not when it comes to Dave Portnoy and Roger Goodell ... 'cause the Barstool Sports founder tells TMZ Sports he still hates the NFL commish with a burning passion.
Pres -- who is by far Goodell's biggest critic -- says the beef was rejuvenated after Barstool tried to purchase the naming rights to the Buffalo Bills' stadium ... and Goodell seemingly intervened.
"So, we tried to do that last year, and I thought we were going to have a chance to do it," Dave said at Saddle Ranch in L.