Withdrawn
detached, unsocialable
Fall out with
Suddenly stop being friends
Hit it off
Quickly become friends
Through thick and thin
In good and bad times
Void
A large, empty space
Myriad
a vast number, a lot
Take off
Quickly become popular
Moan and groan
Complain, be dissatisfied
Best friend
A very close friend you trust
Stand by
Support someone in hard times
Nostalgia
Happy thoughts or feelings about the past
Viable
Possible to do
Online Friend
someone who you only keep in touch with on the internet
Be on nodding terms
Know somebody just enough to greet them
On the same wavelength
Have the same ideas, interest and opinion about something
