If you are to become chaste, you know, locked in a chastity belt and denied sex, then how much of sex is denied? Everything? That is, apart from the obvious. No kissing, no touching, no nudity?
As a fantasy, I think this is hot. In reality, this is a recepie for loosing the very thing that should bind a loving couple together. As an empty threat, however... Again, now we're talking.