There are at least TWO ways by which [naked] women:
can indicate to men that they want sex with them.
A. Terroristically expose various parts of their bodies (such as [mopheaded] LOOSE-long hairstyle, NAKED arms, NUDE legs, SOCKSLESS feet under sandals, etc.) in a random-disperson non-solicited way to general-public men at large.
B. Select a particular man of their choice and ask him - when he is in secluded or secludable view - any one of the following questions:
A normal response might be "Sure" or "Yes" followed by a "Go ahead" from the man so he can make sure she means it and is not a vice-squad decoy cop trying to entrap him.
If she then automatically starts to strip in front of him, he might ask her if he can assist her stripping after she exposes what would typically be considered an act of indecent exposure in general public view (such as her taking off her bra or her pushing down her panties).
Now, what is wrong with both of the questions previously posed?
Nothing is wrong with them - if the request to undress is in the proper context (e.g. made by a wife to her own husband in private with him alone).....and everything is wrong with them - if the request is made outside of the sanctity of marriage.
Specifically:
To randomly expose parts of the female body to general-public male view violates Biblical pro-modesty verses and Scriptural verses inferring the general-public need for (particularly female-human) MODESTY (such as RSV's and NKJV's Genesis 3:21, Leviticus 18, Numbers 5:18, II Samuel 13:18, Proverbs 5:19, Song 7:1-5, Isaiah 20:4, Isaiah 47:1-4, Jeremiah 2:25, Ezekiel 16 and 23, and I Timothy 2:8-9).
To ask suggestive questions involving non-marital heterosexual disrobing violates such do-not-ask-for-pornview-lasciviousness Biblical verses such as "Let not immorality nor impurity be even mentioned among you, as is fitting among saints" (Ephesians 5:3).