Have a history pre- Destiny.
I dunno, the chemistry during Darkness-Light and the Kino short ' Don't Encourage him' gave me a friends feeling.
In Darkness when Scott/Greer advised Johansen should have left, and the concerned look they shared over her.
Or the banter over his 'girlfriend' in ' Don't encourage him .'
I wonder if we will get flash backs regarding it. Or maybe they just gravitated to the most stable elements on the ship.