Did you ever notice a couple of strange things about the cast of "Friends"? Other than Jen Aniston most of the cast members have been very methodical about the way they chose their new roles. Most of them have not gone out and stared in multiple films a year or anything like that. It may not be due to a lack of offers as some people thought.
Also, lately, it seems that the cast has been a little extra friendly on social media. There may be more to that then genuine friendship.