Together, they fight crime!
Dryden Vos pays Beckett to provide him with goods and services. Sometimes goods, sometimes services.
How fitting that it should come down to these two.
Elena makes Bonnie and Damon behave with each other, sort of. Then Damon and Elena go home.
Brutus is there for Antony in a tight spot, and vice-versa.
Sidney's drunk when he orders a Russian bride. He doesn't expect anyone to show up - and he definitely doesn't expect that person to be an awkward-looking guy who barely speaks English.
Dub-con. This is just porn, basically. Set when Katherine was living with the Salvatores.
Caroline fights crime!
Hermann really digs Newt's tattoos. This suits both of them just fine.