"They've probably done more than that." WHAT DOES THIS MEAN???????

I mean pact isn't totally out of the question, but would Foster WANT to make a pact with the worst demon ever? On the other hand if it was a different demmon would they have hooked up as many times? Because I can definitely see a different demon being like "ugh no, anyone but him."

But then also I'm imagine a pact to be a lot like a fake relationship trope and that is sort of hilarious and I think I'd like to do it.