Inspector Clouseau is to Hercule Poirot as Jerome is to Cassanova. Jerome may bumble and stumble but he, like Clouseau, generally accomplishes his objective.
Today that objective is Joaquin. After neatly getting rid of Peter, he sneaks Joaquin off to his secret love nest to engage in a clandestine quickie. You will see at the end of the clip, Peter is not as easily fooled as Jerome thinks.