A lifelong friend
a friend you met in prison
someone you've been friends with since the day you were born
someone you've been friends with for most of your life.
to be in a relationship
to be in a romantic relationship
to be in any kind of relationship
to be related to someone
a childhood friend
someone you were friends with when you were a child
someone you've been friends with since you were a child
a friend who behaves like a child
to keep in touch with someone
to touch someone
to stay in contact with someone
to keep touching someone
together through thick and thin
to keep your relationship through good times and bad times
to keep your relationship through fat times and thin times
to be fat and have a thin friend
a shoulder to cry on
someone with big shoulders
someone with wet shoulders
someone you can talk to when you're upset
to get on like a house on fire
to get on really badly with someone
to get on really well with someone
to set someone's house on fire.
to have a lot in common
to live in the same house
to be interested in the same things
to share your things with someone
to cement a friendship
to become really good friends with someone
to destroy a friendship
to pour cement over your friend
a best friend
the friend who says the nicest things about you on Facebook
your favorite friend
the friend who gives you the most money
to know somebody inside out
to have seen an X-ray photo of someone
to know someone but not like them
to know and understand someone really well
to see eye to eye
to agree with someone about something
to look into someone's eyes in a romantic way
to make eye contact with someone
unrequited love
to love someone who doesn't love your back
to love someone who doesn't have your back
to love someone who doesn't love you back
to drift apart
to slowly lose a friendship with someone
to quietly lose a friendship with someone
to quickly lose a friendship with someone