The Wake Up Sid actor can currently be seen starring opposite former girlfriend Nargis Fakhri in Rockstar, playing a small-town boy who becomes a famous musician.
Kapoor told Hindustan Times: "For me, a kissing scene is just like an action sequence. Normally, I finish off the kissing scene in a single take.
"I do love stories most of the time. Naturally kissing scenes do come up. I don't say daalo [put in] kissing scenes. Moreover, it's too awkward to kiss a girl in front of a hundred people on the sets and in front of camera and lights."
Kapoor reportedly dated his co-star Fakhri during the shooting of the film, prompting his break-up with girlfriend Katrina Kaif.
Kapoor will next be seen in producer Karan Johar's Yeh Jawani Hai Deewani opposite another ex, Deepika Padukone.
On the relationship, he said: "I had a relationship with Deepika. She still continues to be my good friend. But the issue on which our relationship broke is a personal matter.
"It will be very unfair to the girl if I speak about that, because Deepika is single and may marry someone in future."
Kapoor recently admitted that 80% of the rumours about his complicated love life "are true".
Watch the trailer for Rockstar below: