If Cullen/Leliana ends up being a thing, it'll get worse if we then try to figure out who's potentially slept with who?
Fem!Amell: How dare Cullen sleep with Leliana!
Hawke: You can hardly talk. If you carried such a torch for him, why did you have that foursome with Leliana, Zevran and Isabela?
Fem!Amell: Hey! You had a threesome with Zev and Isabela too!
Hawke: Doesn't that mean we've both had sex with Cullen through six degrees of gettin' bacon?
Fem!Amell: I'd much rather have slept with him, than just via proxy...
Isabela: You know how we could solve it, we could drag Cullen and Leliana here, then we all sleep together?!
Zevran: Yes, I agree!
Fem!Amell: What? Even me and Hawke? But we're cousins!
Hawke: Actually, we're second cousins, so I think that's allowed?
Isabela: Then it's settled! I'll get the drinks!
Zevran: And I'll get the oils...
*A long pause* 
Fem!Amell: What just happened?
Hawke: I don't know, but I fear future generations will curse our names for it?