With how divorces work in the UK, she well and truly trapped him. Joint mortgage and a baby. If Ross left her anytime soon, he literally wouldn’t be able to afford to rent even a studio apartment for himself so he’d be living with his parents again probably. Lottie would fleece him for everything he has. They are so tied together in everything… She would get the house, as in, Ross wouldn’t be able to force her to sell until their child is 18. She’d get the far too because she needs it more with a child than Ross does. Ross would have to pay child and spousal support… Lottie with all her imaginary ailments would force him to literally bankroll her life for years without her going back to work. Unless Ross can prove that Lottie is incapable of doing anything on her own and would not be fit to be a single mother, he’d have mo chance.
So he will just cheat on the side. Lottie will put up with it because she knows Ross can shaft her if he leaves his job out of spite or does what she did and starts working through a LTD company and starts paying himself minimum wage. But in any case, it would be very painful and expensive for Ross to get out of this without literally going bankrupt