have known each other a long time
go back a long way
free and without responsbility to anyone
footloose and fancy free
not even born yet
twinkle in his father's eye
to leave home to live independently
fly the nest/flee the nest
relatives
flesh and blood
looks very much like
spitting image of
did everything together
lived in each other's pockets
spend time with important or famous people
rub shoulders with
someone who is only there in your good times
fair weather friend
someone you used to have a relationship with in the past
old flame
