shacking up with your brother's wife isn't just a youthful indiscretion
Tbf, Ed'n'Em were a thing before Will'n'Em. Emma married Will for the wrong reasons and later regretted it.
Besides which, two siblings after the one object of attraction seems to be a recurring TA theme. I hadn't realised until the other day that Roger Travers-Macy (Debbie's dad) had been out with Lil before he married JD. Another one to add to the list!
Add George to the tally of horrible Grundy menfolk.