George feels uncomfortable in Monk's, because the playful banter he enjoyed with Kelly before has been replaced on her part with a cold formality that borders on rudeness. After asking Hildy, Kramer informs George that Kelly doesn't have a boyfriend. George badgers Jerry and Elaine to go to Reggie's.
George feels uneasy at Monk's because the friendly interactions he had with Kelly have been replaced by a formal and potentially rude demeanor. After seeking information from Hildy, Kramer tells George that Kelly does not have a boyfriend. George continues to urge Jerry and Elaine to visit Reggie's.