Nicky says that Kevin looks and sounds like Tom Cruise. In real life Tom Cruise and Justin Hartley are distantly related to each other.
The episode deals with Kevin and Madison's bachelor and bachorlette parties. The episode aired one day after it was revealed that Justin Hartley, who plays Kevin, secretly tied the knot with Sofia Pernas, his girlfriend of two years.
When Nicky calls Kevin Jerry 2.0, Kevin is seen playing with his hands and massaging his left ring finger. Kevin, of course, was not married but more than likely the episode was filmed shortly after Justin Hartley tied the knot again.