Responses
Right cause its not like they started dating when their parents were together
Well, it's not like they're teenagers who will live together like siblings... They're all adults so no need to break any of the couples. It's not incest if they weren't raised as brothers or didn't start their relationship after their parents got married
There is only one option left...although I feel bad I don't give a shit about the parents relationship. Sorry if you disagree but we better figure out how to breakup that marriage cause thats not gonna work...