2 Samuel 13:2
But Amnon became frustrated because he was so lovesick over his sister Tamar. For she was a virgin, and to Amnon it seemed out of the question to do anything to her.
1 Kings 21:4
So Ahab went into his palace, bitter and angry that Naboth the Jezreelite had said, "I will not sell to you my ancestral inheritance." He lay down on his bed, pouted, and would not eat.
Song of Songs 5:8
The Beloved to the Maidens: O maidens of Jerusalem, I command you -- If you find my beloved, what will you tell him? Tell him that I am lovesick!
2 Corinthians 7:10
For sadness as intended by God produces a repentance that leads to salvation, leaving no regret, but worldly sadness brings about death.