At the 2:50 mark, the British hunk searches the lyrics for the Diana Ross/Lionel Richie theme song. The duet begins, and at one point, Pettyfer sits on Kimmel's lap and affectionately touches his face.
Later on in the interview, Kimmel says, "I'm sorry, I'm totally flustered by our moment." And after realizing that the actor just moved to L.A., Kimmel invited his new friend over his house. Just like that, a new Hollywood bromance is formed.