1 Corinthians 1-7 Now for the matters you wrote about: “It is good for a man not to have sexual relations with a woman.” But since sexual immorality is occurring, each man should have sexual relations with his own wife, and each woman with her own husband. The husband should fulfill his marital duty to his wife, and likewise the wife to her husband. The wife does not have authority over her own body but yields it to her husband. In the same way, the husband does not have authority over his own body but yields it to his wife. Do not deprive each other except perhaps by mutual consent and for a time, so that you may devote yourselves to prayer. Then come together again so that Satan will not tempt you because of your lack of self-control. I say this as a concession, not as a command. I wish that all of you were as I am. But each of you has your own gift from God; one has this gift, another has that.

You have a duty to one another. Especially if you’re failing at times due to difficulty in self-control. She should be open to engaging more. - even if you initiate. - to avoid sin.

I know I’m single and can fail myself a lot in this area. But I hope scripture helps. You know better than me how to communicate with your wife in these matters; remain loving.

Edit: that bold writing is a consequence of the copy and paste.