Question: what episode does olivia and elliot sleep together

title: Olivia Benson
text: It is suggested throughout season 17 that Benson is in a relationship with Capt . Ed Tucker ( Robert John Burke ) of Internal Affairs . In `` Manhattan Transfer '' , they are forced to confirm their relationship when Tucker is accused -- by his own cousin , a priest -- of being complicit with a sex trafficking ring that has ties to Vice and the Catholic Church . Tucker is eventually cleared , and he continues his relationship with Benson . In season 18 , Tucker tries to convince Benson to retire with him , though at the conclusion of the episode `` Next Chapter '' , Benson realizes she is not ready to do so , as being a cop is part of who she is . As a result , Benson breaks it off with Tucker at the end of the episode `` Chasing Theo '' .