Alternative form of every man has a price

Every good situation has the potential to turn bad.

Everybody will eventually find a romantic partner.

Alternative form of every dog has its day

Alternative form of those that have, get

Alternative form of arse is gone right out of 'er

my car has broken down

Every good situation happens with misfortune or adversity

Alternative form of that train has left the station

There is always a way to work around the restrictions imposed by rules.