Remember that Jaime had already assaulted Ned, killed his guards and ran out of town when Cersei arranged Robert's "accident".
If Loras and Cersei got married and were expected to produce an heir that would be a very long and likely very uneventful wedding night.
Do you think that either Tyrion or Cersei could say no to their father as far as marrriages? I was wondering about that. It's one thing to have an arranged marriage when you're a kid but they're both well into their thirties. What would happen if they each refused Tywin's order?
I've to watch that episode again.
I think they could say no if they really didn't want to go through with it. Case in point Brienne. But they like their birthright and their money too much to displease their father and risk living in poverty. At any case, makes me grateful that I'm not part of any royal house, to be treated like an incubator for some royal offspring.
"Fire cannot kill a dragon." -Daenerys Targaryen, Game of Thrones
