I don’t think they are necessarily happy together but also don’t think they are majorly unhappy. they are settled and nothing big enough has happened to cause them to break up so they will just plod along in “okness” It probably helps their relationship that Ben works away as it gives them some time apart. Plus I think the freebies brogan gets keep him too. Rewind a few years when she worked full time and didnt her half as much as she does now, I don’t know if he’d have stuck around to begin with.
I just think brogan is happy with the life and image she portrays “bought a big house with her boyfriend, has the relationship life of date nights etc and he likes Disney” brogan is all about creating an image with everything she does and buys, she just doesn’t quite realise it’s not working for her most of the time.