If Gil had sex with Edgar.In Gil route, what would Walter think if he knew Gil had sex with his daddy? I don't think Walter is the kind of guy who does nothing.
WELL. Knowing how Walter is, he probably would just freak out a little and then focus on another thing.
But it deppends on who and how he got told. If its Gil, just talking seriously and relaxed with him, probably what i a said. But if its another person, and with a bad context, Walter probably would take it really bad.
I hope Andy make something out of it.