Sara Ali Khan and Kartik Aaryan previously worked together on Imtiaz Ali's "Love Aaj Kal." image credit: Instagram

The film flopped at the box office and rumors of their relationship broke. image credit: Instagram

Recently, they were spotted in Udaipur and photos of them interacting went viral. image credit: Instagram

Sara and Kartik were seen heading back to Mumbai. image credit: Google

Kartik was seen in a black t-shirt and denim jacket, while Sara was in a white and pink ethnic suit. image credit: Instagram

A section of people are calling their interaction a "publicity stunt." image credit: Google

Today is Sara's mother, Amrita Singh's , birthday. image credit: Instagram

Sara wished Amrita on her birthday on Instagram. image credit: Instagram

A female fan was seen touching Sara while she arrived in Mumbai. image credit: Google

The relationship status of Sara and Kartik remains unclear. image credit: Google