It was Harsh Varrdhan Kapoor who had confirmed that karina and Vicky were dating. read the story

Vicky Kaushal and Katrina Kaif had never earlier spilled beans on their relationship, but Harsh Varrdhan Kapoor had confirmed that they were dating. 

Harshawardhan quoted as saying in Zoom’s By Invite Only

“Vicky and Katrina are together, that’s true. Am I going to get in trouble for saying this? I don’t know. I think they’re quite open about it,”

This was said months before but now Katrina and Vicky are happily married .