I think Nathanial should have backed out when it was made clear he was being offered someone to slot into their narrative. However hindsight is grand.
He's been nothing but decent, mature and insightful to Ella. As he said, her life has been consumed by her 'trans journey'- substantial surgeries only one part of it, now she is desperate for acceptance and affirmation in quite unhelpful ways, via sex. She is in no way a rounded person ready for marriage. He's a mid 30s man who has presumably been through his own coming out process and seems to want someone stable with more to talk about than that.
No way would he have been right to give Ella the physical gratification she wanted and I'm glad he realised that.
JJ annoys me in that he keeps going 'my ex was a VS model' in that raised eyebrow, 'top that' way. Apparently she wasn't, not as in the catwalk supermodel sense that people would infer- naturally stunning, incredible bone structure etc. He means some lass with implanted bits who did some catalogue work or something. Bianca could do all that if she wanted to. Doesn't make her inferior (not saying she is inferior to a supermodel).
Can't quite express what I mean just that JJ seems to have stretched the expectation somewhat at Biancas expense. No disrespect to anyone. It's not that anyone is innately better, but there are beauty standards.