Hbr 13:4 Marriage [is] honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge.
Keep it between yourselves - nobody else should be involved, or even needs to know. If it bothers you, you should let him know.
From the epistle reading at Orthodox weddings:
Eph 5:22 Wives, submit yourselves unto your own husbands, as unto the Lord.
.. but also
Eph 5:25-27 Husbands, love your wives, even as Christ also loved the church, and gave himself for it; That he might sanctify and cleanse it with the washing of water by the word,That he might present it to himself a glorious church, not having spot, or wrinkle, or any such thing; but that it should be holy and without blemish.
If you are ashamed, or it makes you feel like an object of sin, then bring it up with your husband -- who is to love you and protect you, not use you.