Song of Solomon 1:15 "Behold, thou art fair, my love; behold, thou art fair; thou hast doves' eyes."
A dove's eyes are set so that they can only look in one direction at a time. They are not easily distracted. This characteristic is attributed to the bride of Christ. She too is continually and steadfastly tending to Jesus, no matter what distractions and "other lovers" may come her way. She simply cannot look away.
These "eyes" are in sharp contrast to "a high look" (Ps 101:5), an "evil eye" (Matt 20:15), and "eyes full of adultery" (2 Pet 2:14).
I believe this is what Proverbs 31 means when it says, "Who can find a virtous woman? for her price is far above rubies. The heart of her husband doth safely trust in her, so that he shall have no need of spoil" (vs. 10-11).
Most people limit this passage to refer to a man's natural wife. While this of course is true, it can speak on a deeper level too. The Proverbs 31 woman is symbolic of the bride of Christ; the wife of the Lamb whose character is exemplary. Another translation renders verse 11 as:
"Her husband depends on her, and she never lets him down." (CEV)
There is no fear of unfaithfulness; she is 100% given over! God's heart has been made vulnerable to her, and trust has been proven. She indeed has doves' eyes!
May the Lord delicately work this attribute into all of our lives.