They played 11 seasons together -- so what's it like for Julian Edelman to watch his former Patriots QB Tom Brady ballin' out for the Tampa Bay Bucs??

"It's obviously, definitely weird."

The MVP of Super Bowl LIII opened up about his current relationship with TB12 on Barstool Sports' "Pardon My Take" podcast ... comparing it to a marriage.

"It’s kind of like a relationship, or a marriage, where you grew apart but you still love each other," Edelman says.