Bronny James is experiencing the reality of being an NBA player ... penning a mushy love note to Parker Whitfield during the Lakers' road trip -- letting all his followers know he misses his girl a whole bunch.
The Purple and Gold have been on the move ever since their win over the Sacramento Kings on Oct. 26 ... with visits to Phoenix, Cleveland, Toronto, Detroit and Memphis on the schedule before making it back to L.A. for a home matchup against the Sixers this Friday.