Can a man lust after his own wife?
The word for lust, both in English and in Greek, means a strong desire. Generally it is used in a negative sense, in that we speak of someone having a strong desire for something that is wrong. But it can be used in a positive sense, that is a strong desire for something that is right.
Sexual relations is expected between a husband and wife. "Nevertheless, because of sexual immorality, let each man have his own wife, and let each woman have her own husband. Let the husband render to his wife the affection due her, and likewise also the wife to her husband. The wife does not have authority over her own body, but the husband does. And likewise the husband does not have authority over his own body, but the wife does" (I Corinthians 7:2-4). Therefore, for a husband to have a strong desire for his wife or a wife for her husband is both normal and expected. "Let your fountain be blessed, And rejoice with the wife of your youth. As a loving deer and a graceful doe, Let her breasts satisfy you at all times; And always be enraptured with her love" (Proverbs 5:18-19).
You can see the strength of desire in Shulamith's description of love in the Song of Solomon. "Set me as a seal upon your heart, as a seal upon your arm; for love is as strong as death, jealousy as cruel as the grave; its flames are flames of fire, a most vehement flame. Many waters cannot quench love, nor can the floods drown it. If a man would give for love all the wealth of his house, it would be utterly despised" (Song of Solomon 8:6-7).