I don't watch EE now, but I think about 2 characters and how they are related to each other (either by blood or romance)
Like Max/Roxy
Max=Jack'sbrother=Father of Roxy's Baby=Husband of Ronnie= Roxy's sister
Also Max= Staceys Bit on The Side= Seans sister= Roxys husband
Try it.
Pick 2 random characters. There's always a link!(sometimes obscure though)