Forget Ubers and Lyfts ... Gisele Bündchen got a ride home from the airport on Friday morning from her jiu-jitsu instructor, Joaquim Valente -- further fueling rumors the two are, indeed, an item.
Tom Brady's ex rolled into Miami International at around 4:45 AM after a vacation in Brazil ... and Valente was waiting on the curb for her as soon as she touched down.
Gisele chucked her bags into the back of his pickup quickly ... before hoppin' in the front seat. The duo then sped off.
While there was no PDA -- it's hard to ignore the signs that they're definitely a couple.