Jason and Neri grew closer through all four seasons, but it became very obvious in Season Four. Cue much teasing.
Neri: Jason says we must be careful now, stay where it is hard to find.
Mera: And if Jason says so, it must be right, hmm?
Neri: Jason cares for us.
Mera: Almost as much as you care for him.
Neri: You make big talk about nothing.
Jason invites himself to spend the night with Neri and Mera. They gang up on him.
Jason: Something funny?
Mera: Just how you always agree with Neri.
Jason: I only agree with her when she's right.
Mera: In that case she must always be right.
Jason: Yeah, well, she is, um, alm - almost always right.
Neri: Oh? When am I wrong, Jason?
Jason: Well, you know, we all make mistakes sometimes...better turn in, hey?
Neri: Jason, I'm glad you are here. Goodnight.
Jason: Night, Neri.
Mera: (several moments later) Goodnight, Jason.
Jason: (coughs) Night, Mera.