they're just partners, though Neo was made later in the creation of Romans character cause Monty thought he needed one.

Like, partners partners?
Like, they're bonerating?
Or like, partners in crime?

actually its unknown if they have a personal relationship, we just know they are partners in crime. though many have speculated on romantic interest to even her even being his daughter. until we get more of either of them thats pretty much all we know for now.

I don't remember seeing them in the same scene ever, but I've seen a **** ton of R34 of them together.

right before and after he fights in the giant robot are the only scenes they're together i believe. some also believe she was assigned to roman by cinder to keep a closer eye on him. i hope that theory is untrue as i want them to at least be friends