"For the last three days I've been trying to wake up out of this nightmare. But I haven't," Diddy wrote on Instagram, alongside a video of the two posing for an Essence magazine photo shoot.
"I don't know what I'm going to do without you baby," he continued. "I miss you so much. Today I'm going to pay tribute to you, I'm going to try and find the words to explain our unexplainable relationship. We were more than best friends, we were more than soul mates. WE WERE SOME OTHER S--T!! And I miss you so much. Super Black Love [black heart emoji]."
Throughout Sunday, Diddy posted videos and tributes to Porter on his profile and on his Instagram stories. In one montage dedicated to Porter, he wrote, "I'll raise our family just like you taught me to. Love you forever!!!!"
Plans about Porter's funeral have not been made public.