Been out today exploring Berlin park and zoo. It is a wonderful place. But I think I've made a bit of a mistake. I'm never going on holiday with a couple again. The two I'm with only talk to each other, only consider what they want to do, and are always having really awkward fights that Kat and I have to pretend to ignore. I have to control myself to not let it get to me, but I'm getting so sick of seeing them pace ahead hand in hand whilst not even attempting to talk to us two. Something I will never do again. Oh well, I guess I have to just grin and bear it...