Helen has never been able to deal with Henry on her own though, has she? I remember she freaked out rather badly about the way he was behaving on the day she moved their stuff to Rob's.
Rob was being an excellent DSD last night, perhaps in contrast, so it crossed my mind that we're heading for a scenario where her mental capacity is doubted - though we have doubted it for years! - what with her 'losing' the one and only invoice she has dealt with for months.
What he was really doing was underlining how much she needs him. Mr Perfection. OTOH she might be able to deal with Henry a little better if Rob wasn't undermining her with him by letting him do things when she has said no. (Last time they went to The Bull).
He also knows that H will extoll his virtues as perfect dad to anyone she ever has contact with, a dwindling number of people, and so he won't look so bad when he rejects the child Jess is having. Unless he's going to attempt to get custody of that baby because he's such a perfect dad.
Mind you, having one wife who he claims is deranged is bad enough but having another woman who is also losing her marbles is a massive red flag.
He's such a sinister character that it's impossible not to look for ulterior motives in all he does.