Well, i can totally identify with this,

my story basically was -- as a child i had loads of friends
continued into my early twenties - met my long term ex and 10 years later when we split i had drifted away from most of my friends- i still have a core of 4 very good friends who i will see (due to distance/wives/manic jobs) once every few months
Because i live a fair distance from my friends i cant just pop round and hook up for a laugh, so i guess internally i decided i was a self fuelled entity who didnt need anyone.

I then cross referenced this with my need to whore, so now i have female friends which i can call up for a hook up, good banter, wine and sex