How do Hms from different years become friends?

[BrooklynFan]

How did various Big Brother housemates become so friendly from the different years? Gerry from BB8 is good with PEte from BB7, Aishleyne from BB7 is friends with Kenneth from BB10 - where do these people get together?

[Shasown]

Some meet during shows covering BB like BBBM, BBLB, others meet at the series of parties after the series is finished, in one or two cases they knew each other before the shows.

[Princess]

I say being in BB is an experience you could only share with people who have been on BB,whether it's been your series or not. Plus there would a lot of BB parties where they could befriend one another.

[BBfanUSA]

Rachel from BB9 and Imogen from bb7 became friend after they were both in the same beauty pagent a few years before BB

[ILoveTRW]

night club appearances