Because the writers are running out of ideas and just picking names out of a hat for the next affair storyline they're going to do
The writers on these things get a bad rep. I think because the UK has so many American exports, where so many series have the writers as the core showrunners, there is an impression that soaps / dramas here are the same. In the case of soaps, I can't think of any of them where this is the case. The writers are most freelancers, just trying to earn an honest crust and make the best of what they're given. They are given a comprehensive outline out of what the producers and storyliners want in every episode - the writer's job on soap really is quite uninspiring as in a way all they do is join the dots and create a bit of magic if they can. Storyliners are often just English graduates ffs without any writing background. I don't know why this is the case in the UK, and soaps aren't run completely by a core team of brilliant writers. I know they're paid quite a bit, but this is on the basis of not actually getting that much work across the year.
I like Michael and Janine as a couple. A very good match lol.
Though, I am getting kind of concerned. At first, Michael was not hot. However, he is increasingly becoming so. In a weird, slightly psycho kind of way lol.