But it's not being presented here as Dick taking the natural step he was heading for anyway. He's resisting it in the beginning and Kory says he should do it. He wasn't just an adolescent, he was an adolescent raised in an incredibly rigid and disciplined way.
I think Dick's changes here are actually more profound. Kory does agree not to sleep with other people--Dick's pretty much correct in saying that it's not going to work for him otherwise. (Btw, do they ever show Kory chafing under that, btw? Because I think that's another way I doubt the writers are really able to imagine where she's coming from. I suspect that for all Kory talks about Tamaran the writers suspect it would kill the romance for a large part of the audience if Kory was seriously wishing she could sleep with other guys.)
It still seems like Kory's whole pov is being respected in the story. They talk about their different povs that's obviously part of an on-going conversation they always have. Dick says love should be b/w 2 people and her planet is just so strange--he can't get his mind around it. She lectures him on how her planet's way is better and all the problems earthlings would avoid if they got it. But it ends with Kory completely triumphant on all fronts. It starts with Dick having a problem, Kory saying she can help and Dick letting her fix it. Along the way it starts with Dick resisting living together with her, Kory (as part of her lecture on how her ways are better) encourages him to do it and then he does it.