It is difficult to say if Lionel Messi would be happy to go to Paris and join Neymar at Paris Saint-Germain. Messi is a very private person and his feelings on the matter are unknown. On the one hand， Paris is an amazing city and Neymar is a close friend of Messi. Being able to spend time with a friend in a great city could be a great experience. On the other hand， Messi is also a very competitive player and may not want to leave Barcelona and the team he has been with for so long. He may also feel that it would be a step down to join a team that is not as competitive as Barcelona. Ultimately， it is difficult to say how Messi would feel about going to Paris.