Kachorra tells Pierina that Bruno kissed her on the cheek, so it wasn't a real kiss. However, in the freeze frame makes in the beginning of the episode makes it look like he kissed her on the lips. Kachorra could be lying, but it is also possible that she is telling the truth and this was just an angle shot. The actual kiss was less than a second since she pushes him away, and part of her face was pushed into his.