Jon: is either using comic strip generic language or plans to make out with Liz. Because when I ask someone to go to a movie, it's a specific movie, and I tell them the title. If I just say "the movies", it means I do not and you should not care what the movie is, because the theater is just a place to make out. Panel one, Jon puts on his half-lidded, smirking ladies' man face, a picture of confidence. Panel two reveals Jon has long-forgotten the signified emotion that's supposed to be behind a confident expression. Panel three shows Jon's self-destruct reflex trying to kick in and put his life back into the miserable rut that deep down, we consider our natural state.
Liz: is probably impressed Jon was able to restrain himself from calling her for 12 days, even as she counted each one and knitted her brow, looking at the X's on the calendar. I know I am.
Garfield: is not really happy for Jon, as evidenced in panel two. He is finally amused by a man's confusion and probably terror, and relishes the possibility that Jon's anxiety may continue for some time.
Again: Does Jon move the phone to the table for these calls, or is it a different table, or is it a different part of a very long table?