everything changes....

'I read somewhere that every cell in your body changes over a seven year period so that in effect you are a completely different person now from the one you were 7 years ago'
'really?'
'yes, I reckon that accounts for the 7 year itch - I think that at some core level each of our bodies is screaming out to the other one 'who the hell are you?!'
'haha quite possibly that would certainly explain quite a lot. Though I've never made it as far as 7 years it's more like a 3 year itch with me'
'maybe you just have a higher metamorphic rate than most people!'