Most likely true, neither Mr. Silver nor Robert seem the type, I have my hunch that Mr. Silver is married to whoever only as a show, to maintain that respectable businessman image or something, and like you said, Robert is just a shady ass player. And for some reason I doubt Christine would have all too glamorous end on NTR route, she's not exactly displaying any good judge of character for messing with them in the first place, she seem reckless and stupid, and I haven't even played NTR route, I avoid that content like plague, haha.