For some couples the 'promise' method may not be good enough or very effective. Most men won't have the self control to stay 'good' in those times where all he can think about is Cumming. The promise is broken and the game is ruined if he sneaks off by quickly masturbating to satisfy himself. Most all people masturbate regularly and Men in particular find that it is a hard habit to break.
Because of this some couples skip past the "pledge method" and resort to a more physical method of preventing masturbation by using a male chastity belt. In our opinion, such devices should be used for teasing fun, and are not seriously practical for long-term uninterrupted wear, but every couple will experiment with what works well for them.
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keeping a good woman happy is not being henpecked, it is investing in your future
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