growing apart ~ is that the appropriate way to say it?

as we grow [people love the phrase] we grow apart.

i don't know about that to be honest. as i grow you grow. and we help each other grow. i don't see how that leads to "grow apart" but i imagine the sentiment people have about that is really just: for that particular relationship, both parties grew as much as they could with each other. and now they've hit a stump in the road. together there isn't more growing to do. with that comes a naturally less urgent necessity to spend time together. it doesn't mean i've changed or you've changed. we're still friends. just not in contact. i'm one to embrace this quality of relationships relatively easily. move between people and relationships like a race car. it didn't occur to me until just recently why my relationships rarely last more than a year or two. i thirst for growth. i move forward so fast and divulge my every wisdom in 20 seconds flat. with my quickness to entrust you with what all my soul can bear to you... you return the favor in a flash of light. that much so far i understand. what i don't understand is why there's nothing else for me to say after that. it seems almost as if once you know my past there's nothing left inside to share. and that is sooooo untrue. my most healthy relationships now are in the now. i've ceased speaking to everyone about the past. most people now don't know much at all about my past. maybe that's where i go wrong. with certain people that's what i do, i talk about my past. and you know. it takes neither of us anywhere special.