The video shows a man kneeling and presenting a ring to his partner halfway through their fried chicken.
This prompted a series of positive tweets from other Twitter users, including celebrities, KFC South Africa, TOTAL South Africa, Takealot and many others to donate towards the couple's special occasion.
Hector Kansi proposed to his now fiancé Nonhlanhla in front of a large crowd whilst dining at a Vaal KFC outlet.
The video landed on Twitter and there has elicited an outpouring of positivity, with social media users taken with the woman's overwhelmed reaction, and the man's broad, joyous smile.
The fast-food giant shared the video on social media, asking South Africans for help finding the couple. We've found the lovely couple, and looks like we're having a Streetwise Wedding. The video received more than 600,000 views by Friday afternoon.
Bhut' Hector got down on one knee and asked Nonhlanhla to marry him as crowds of onlookers cheered.
"We would love to make their union even more special by offering them a two-page spread in our magazine so they can tell their beautiful love story!" tweeted DRUM magazine. Your kindness has truly warmed us.
Many South African businesses are also tweeted out to offer their services. Precious the Planner has offered her expert planning skills pro-bono, DJ Fresh has offered to DJ and Black Coffee is interested in covering the costs of groom and groomsmen suits.
"I want to offer my performance at the wedding for free".
Refilwe Ntuku of KFC said, "Please join us as we try to do something special for the happy couple".