Provide the theme summaries for the following conversation: 

Alex: I noticed our convo here died a little. time to revive it :)
Derek: I'm in. I am honored to be a member of such an esteemed group :D
Alex: Awwww. send some pics!
Paula: <file_photo> :D :D :D :D
Alex: damn it! #jealous send something more recent though! it's so freaking freezing here
Paula: <file_photo> I seem to be the one who gets inbetween couples :D so happy you always have room for me
Derek: always! :) and you don't "get inbetween", your company is always welcome :)
Alex: Does B ever get on here?
Derek: You gotta have patience with B. She's been extra busy :D
Paula: work gets in the way?
Bailey: more like PS4 and rise of the tomb rider :D

Summary: 
Alex, Derek, Paula and Bailey haven't been talking much lately. Bailey is busy with playing on PS4. 