Conversation so far:
What happened to P. G. Wodehouse in 1915?
P. G. Wodehouse's old songwriting partner Jerome Kern introduced him to the writer Guy Bolton, who became Wodehouse's closest friend and a regular collaborator.
What did P. G. Wodehouse and writer Guy Bolton collaborate on?
P. G. Wodehouse and writer Guy Bolton collaborated on Miss Springtime (1916), which ran for 227 performance, a good run by the standards of the day.
What did P. G. Wodehouse and writer Guy Bolton do next after Miss Springtime?
P. G. Wodehouse and writer Guy Bolton produced several more successes, including Leave It to Jane (1917), Oh, Boy! (1917–18) and Oh, Lady! Lady!! (1918).
Were there any other successes for P. G. Wodehouse and writer Guy Bolton besides Miss Springtime, Leave It to Jane , Oh, Boy! and Oh, Lady! Lady!!?
P. G. Wodehouse and writer Guy Bolton wrote a few more shows with other composers. Wodehouse's lyrics won high praise from critics , and fellow lyricists such as Ira Gershwin.
What other composers did P. G. Wodehouse and writer Guy Bolton write with?
Did P. G. Wodehouse do anything other than musicals?
P. G. Wodehouse worked extensively on his books, sometimes having two or more in preparation simultaneously.
Were P. G. Wodehouse's novels popular?
Some critics of P. G. Wodehouse have considered his work flippant, but among his fans are former British prime ministers and many of his fellow writers.
Are there any other interesting aspects about the P. G. Wodehouse article?
Though never a naturally gregarious man, P. G. Wodehouse was more sociable in the 1920s than at other periods.

Question: why was he more sociable in this time?
Self-contained rewrite: Why was P. G. Wodehouse more sociable in the 1920s?