Chastity is not only for single people. Chastity in marriage is the understanding that one’s spouse is not the property of the other, and must always submit to the wishes/demands of the other. This is where communication is so vital in marriage.
If you have any misgivings about your treatment of (or by) your spouse, have a good heart to heart talk. The sad thing would be one day to find that love has grown cold, sex is an unpleasant “duty”, and the warmth and passion has gone out of marriage due to the self centeredness of one party. A self-centeredness that grows slowly through habit or a lack of communication. A spouse is a gift from God, not property obtained by fiat.
Shalom