Stroll will be in his third season in F1 after enduring a tough 2018 following a bright debut season in 2017.
He joins Racing Point after his father, Lawrence Stroll bought the old Force India with a consortium.
"I remember it very well," Perez told Le Journal de Montreal.
"But it's a thing of the past.
"Now we have to work together for the sake of our new organisation.
“Our relationship must be healthy, both on and off the track," he added.
Despite being happy to forget their old clash Perez insisted he won’t be changing his racing style following the Canadian’s arrival.
"I will not change the way I drive, even if my teammate is the owner's son.
"I'm not worried.
"We are at the highest level of our sport and we have a job to do,” the Mexican said.