When the ridge of his dick disappeared in her ass, Jill said, "Ouch, it hurts. Go slow. Ow. Go slow."

She had a pained look on her face and was breathing heavily. Rob stopped pushing while my wife adjusted to the cock in her ass. He told her to relax and when she did, he pushed a little further. Jill, again, begged him to go slow and he complied with her request. She's only let me fuck her ass a couple of times since I've known her so I know she wasn't used to being sodomized, especially with a dick as big as Rob's. He pulled back a little to...