If the 8th image in the game, of Big John standing naked over Linda's naked body, and the 9th image, of Big John hitting Linda, didn't upset you, you can probably handle this scene. If those images caused you discomfort, maybe skip this one. I'm just trying to warn people who are especially disturbed by these types of scenes.
They don't fuck. I already said you're never gonna see them fuck. Big John won't fuck anyone in this game. He still expects payment from Linda, though, and he can get upset if things don't go his way. There is violence in this game, including violence against women... or one woman, I guess. Jack will get his chance to stop things in the afternoon of day 2. Make the right choices so he can stop Big John.