I never doubted it for a moment.
Of course I'll be met with an eye roll when I remind her of it. Or she'll get upset with me and make me regret reminding her. But if one of her bfs stops by in the evening she's ready to spend the night with him and will think nothing of waking me up at 3am demanding clean up service. Well, it's all part of cuck life and I wouldn't want it any other way.
 
My wife has told me this exact thing many times since she has become a hotwife. I have always known my little cock was not enough to satisfy her as she needed and to satisfy her cravings, so I used oral and other skills to try to get her off. But I love watching her when an endowed man brings her to climaxes I never saw imagined possible.