Well Sid and Marilyn's relationship was doomed from the start, they were never a good match. At last Doctor Dish has faced reality and put an end to it all. Meanwhile his son Dex has actually got together with April, who is a really good match for him, it makes much more sense to see them together than to see April with Xavier, who were another odd couple and not at all suited to each other.
And what's it all got to do with Morag? She seems too disapproving and judgmental. Let Marilyn have a bit of a drunken laugh with Miles and co. everyone else thought she was funny. And why does Roo have to answer to Morag? It's her business what she does.